Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
tuong dung » tuong duong, thuong dung, thong dung
dung dang » dung dan, dung dong, dung danh
dang chan » dan chan, dong chan, dang thanh
thieu ca » thieu cac, thieu cua, hieu ca
chan cap » khan cap, than cap, cao cap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu ca - thanh ((phuong cham) OR (phung van)) tuong dung dang chan cap~.
• Adding a wildcard symbol may retrieve word variants: toc thieu ca - thanh ((phuong cham) or (phung van)) tuong dung dang chan cap*.