Perhaps you should try some spelling variations:
hoc thieu » toc thieu
tang quan » tang luan, nang quan, thong quan
tong quan » thong quan, tong luan, luong quan
dong cong » duong cong, dung cong, dang cong
tac nhanh » tac nhan, tac thanh, tai nhanh
nhanh cau » nhanh cay, thanh chau, nhanh ha
cong tac » cong ty

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: ((hoc thieu) OR (hoc hien)) xanh - hanh ((tang quan) OR (tong quan)) dong cong tac nhanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - hanh ((tang quan) OR (tong quan)) dong cong tac nhanh cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - hanh ((tang quan) OR (tong quan)) dong cong tac nhanh cau*.