Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
cong cong » cong dong, trong cong, dung cong
doc hieu » toc thieu, hoc hien
manh cua » ban cua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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 (hoc thieu)) xanh - canh ((manh cua) or (doanh cua)) cong cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) xanh - canh ((manh cua) OR (doanh cua)) cong cong tan toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc thieu)) xanh - canh ((manh cua) or (doanh cua)) cong cong tan toan ban*".