Perhaps you should try some spelling variations:
phan dung » phan ung, phan dang, chan dung
cong dung » cuong dung, cong dong, cong luong
doc hieu » hoc thieu, hoc hien
dung dat » dung va, dung tai
dat cong » dai cong, dam cong, bat cong
dung san » dong san, dung sai, dung luan
van chat » cao chat
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) tinh - phan dung dat cong dung san van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) tinh - phan dung dat cong dung san van chat.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) tinh - phan dung dat cong dung san van chat*.