"would like to supplement" is a perfectly acceptable and correctly written phrase in English.
It usually expresses the speaker's desire to add something to something else. For example, you might say: "I would like to supplement my essay with some additional sources to support my point."
I didn't have space to bring a number of elements in so I would like to supplement the column with some additional stuff relating to obits, which I find to be one of the most interesting content elements in The Times.
In this note, we would like to supplement some essential conditions, which will ensure that the mapping B is well defined, to achieve our claim.
In this note, we would like to supplement several conditions, which are used in their proofs but not referred to in the conditions of the main results, to achieve our claim.
And, as we've previously reported, these YouTube videos, with the accompanying ads, can be placed on any Website by publishers who don't have videos of their own or would like to supplement what they have.
In near future, we would like to supplement our speech corpus with another three emotions (boredom, surprise, and fear)—so that it would directly be comparable with the EMO-DB which we use as the reference one and to carry out the extension of the GMM classifier for these emotional states.
While he makes a case to stigmatize temps in some ways, I would like to supplement his piece with a different perspective and the positive side of what we're seeing in regards to an increasing temporary workforce.
So I'd like to supplement Mr Sharkey's rule about for-profit business travel: if a charity can afford to compensate its top executives lavishly, it owes its business travellers "a reasonable degree of comfort and convenience, even if it costs a little extra".
When it comes to functioning as a business woman in a primarily male-dominated field such as technology, Sheryl Sandberg suggests that women "lean in". I'd like to supplement that idea with the charge to "tune in" to your own body, your own vulnerabilities and your own strengths.
If you'd like to supplement your dance income with something other than waiting tables, I wouldn't recommend writing.
Students were also asked to rank four different methods they would like to use to supplement their learning.
Wallman, now a senior fellow at the Brookings Institution, would like to see companies supplement conventional reporting with additional material, prepared perhaps by someone other than accountants.
