Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
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 chan » dan chan, ban chan, can chan
chan cac » phan cac, chon cac, nhan cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (((hoc thieu) OR (toc thieu)))) tinh - thanh trung tan dung cong tan chan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (((hoc thieu) OR (toc thieu)))) tinh - thanh trung tan dung cong tan chan cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (((hoc thieu) OR (toc thieu)))) tinh - thanh trung tan dung cong tan chan cac*".