"according to certain rules" is a grammatically correct phrase and can be used in written English.
It is commonly used to indicate that something is being done or interpreted in a specific manner based on established rules or guidelines. Example: The project must be completed according to certain rules set by the company's quality control department.
Her body had been built according to certain rules, but those rules had now been broken.
4. Humans know by sense perception and argue by reason according to certain rules.
By this method, several same or similar time-varying components are arranged according to certain rules along the time axis.
This was conducted according to certain rules, and offered a stimulating escape from the confines of arranged marriage.
And now, in fact, Sarah Palin and Bill McKibben are both tweeting away according to certain rules.
Sitting in his library here, a comforting room that exudes stillness, he noted that buildings, like plants, must grow according to certain rules.
The formal system of transfinite logic is not arbitrary: "This formula game is carried out according to certain definite rules, in which the technique of our thinking is expressed.
Mr. Riley, always something of a cosmic mystic, won his first fame in 1964 with his composition "In C," which has been endlessly recorded and played, in part because it's so beautiful and in part because it's so ingenious: a series of simple melodic figures that any group of any kind of instrumentalists may play according to certain simple rules, setting up a dappled tapestry of sound.
The operators coordinate their spectrum usage according to certain sharing rules and mutual agreement.
Then, similar neighboring regions are merged according to certain decision rules.
The texts themselves are generative: I recorded hundreds of nouns, verbs, adjectives, and adverbs (most culled from an essay by Miguel de Unamuno) that the computer assembles into extemporaneous utterances according to certain grammatical rules.
