Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
nang quan » ban quan, nang suat
ban thanh » ban hanh, ban hang
thanh lap » thanh san, phan lap, thanh hai
doc hieu » toc thieu, hoc hien
mang qua » mang cua, mang vua, tang quan
cong ban » cong bang, cong san, cong tan

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)) tinh - hanh ((mang qua) or (nang quan)) trong cong ban thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) tinh - hanh ((mang qua) OR (nang quan)) trong cong ban thanh lap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc thieu)) tinh - hanh ((mang qua) or (nang quan)) trong cong ban thanh lap*".