Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hang hang » nang hang, cang thang, hung thang
manh toan » thanh toan, anh tuan, tinh toan
theo yeu » theo tieu, thiet yeu
theo chu » theo chieu, cho chu, chao chu
toan ban » van ban

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: ((theo yeu) OR (theo chu)) xanh - hang hang va ((nhung cong) OR (thong cong)) manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo yeu) or (theo chu)) xanh - hang hang va ((nhung cong) OR (thong cong)) manh toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((theo yeu) or (theo chu)) xanh - hang hang va ((nhung cong) OR (thong cong)) manh toan ban*.