Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, hanh mang, hanh tung
cua trong » cua truong, cua trung, qua trong
tan thanh » tran thanh, tang thanh, toan thanh
thanh lap » thanh san, phan lap, thanh hai
doc hieu » toc thieu, hoc hien
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh

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 tang) or (anh tang)) cua trong cong tan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) tinh - ((hanh tang) OR (anh tang)) cua trong cong tan thanh lap.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) tinh - ((hanh tang) or (anh tang)) cua trong cong tan thanh lap*.