Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
phuong dung » thong dung, cuong dung, phuong hoang
dung dang » dung dan, dung dong, dung danh
dang khan » dang khanh, dang khai, dang thanh
toc hieu » toc thieu, doc hieu, hoc thieu
phung ho » phung thi, tung ho, hung hoa
khan cap » khan ap, than cap, khoan cam
hieu ca » hieu cac, hieu cua, hieu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu ca - thanh ((phuong cham) or (phung ho)) phuong dung dang khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu ca - thanh ((phuong cham) OR (phung ho)) phuong dung dang khan cap*.