"become further complicated" is a correct and usable phrase in written English.
It is often used to describe a situation or problem that has become more complex or difficult to understand. A common way to use this phrase is: "The situation has become further complicated by the addition of new information." Example: The negotiations between the two countries became further complicated when a third party got involved and presented their own demands.
The load carrying and sharing behaviors of micropiled rafts installed with inclined condition would become further complicated as a result of the coupled influences of group and inclined configurations.
The process has become further complicated by congressional ire at not being told that Petraeus was under FBI investigation, on top of what are likely to be contentious closed-door hearings this week on the administration's actions surrounding the Sept. 11 attack on the U.S. diplomatic mission in Benghazi, Libya.
It has become further complicated since TxDOT's funding is dependent on revenue from multiple sources with different permissible uses.
The combination of these last two parameters results in a seemingly intractable conundrum, and become further complicated by the real-world realization that pulsed lasers exhibit shot-to-shot energy variation.
The non-linear roll performance become further complicated due to the free surface and sloshing effects of the mass in the live fish tank.
This puzzling task, whose true meaning remains tantalisingly opaque until the closing pages, becomes further complicated by the arrival from Wisconsin of Emily Parker, an American agent.
The coinage situation became further complicated when the authorities of the opposing forces started counterstamping each other's coins in order to use them within their own camps.
Last year, the first time Fox took over all of postseason baseball (before that, it had been divided between Fox and NBC), the situation became further complicated by the terrorist attacks of Sept. 11.
That episode became further complicated when a University of Colorado team was given credit for the find in 1985 and Mr. Savoy objected that his own discovery had been widely reported 20 years earlier.
