Perhaps you should try some spelling variations:
thanh tung » thanh cong
dang cong » dung cong
doc hieu » hoc thieu, hoc hien
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
cong tac » cong ty
hanh cac » hang cac, hanh cat, nhanh cay
phan dau » phan tu, hang dau

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)) xanh - thanh tung cua dang cong tac ((hanh cac) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) xanh - thanh tung cua dang cong tac ((hanh cac) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) xanh - thanh tung cua dang cong tac ((hanh cac) or (phan dau))*.