Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » hoc hien
trung tan » trung tuan, trung tran, trung tang
dung cong » dung trong
tan dung » tran dung, tin dung, van dung
cong tan » cong tac, cong san, cong thanh
tan nhu » han nhu, ta nhu, tai nhu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (toc thieu)) xanh - thanh trung tan dung cong tan nhu cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - thanh trung tan dung cong tan nhu cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - thanh trung tan dung cong tan nhu cau*.