Perhaps you should try some spelling variations:
thanh trung » thanh tung
mot chieu » doi chieu, ho chieu
trung cua » truong cua, trung tuan, trung cap
cua trong » cua truong, cua trung, qua trong
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
san than » sang than, san thanh, ban than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doc hieu)) xanh - thanh trung cua trong cong san than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doc hieu)) xanh - thanh trung cua trong cong san than tap.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doc hieu)) xanh - thanh trung cua trong cong san than tap*.