"we also still" is correct and usable in written English.
You can use it to introduce an additional point in the sentence that is related to the previous point. For example: "We have already discussed the new regulations, but we also still need to consider how to implement them."
We also still have an incomplete understanding of how regulatory sequences are linked to target genes.
We know that it's serious; we also still know that we are very lucky people.
We keep up with our times, but we also still keep to the 19th century in some ways".
"We also still await FSA enforcement action against individuals in some of the bigger players who were responsible for the mis-selling of PPI".
"We also still need to know why members of the armed forces used techniques like hooding, stress positions and sleep deprivation when these had long been outlawed".
We also still have an advantage in having private colleges and universities: there are real islands of excellence - Yale, Stanford, M.I.T. - that few other societies can match.
We could also still use geocentrism if we wanted – we would be able to predict solar and lunar eclipses, roughly, but nothing would work properly.
I mean, honestly we still need some practice guys and we're also still lacking a third iPhone.
We're also still moving forward with Hong Kong, but we underestimated how long the international hardware certification process would take".
As we seek to choose our next president, we are also still trying to decide, as a nation, whether to risk our still-fragile economic recovery on the competing theories of Keynes and Hayek.
We are definitely the next boomtown, and yet we are also still the most economically segregated community in our country.
