Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, theo chu, thi chieu
hanh trang » canh tranh, hanh trinh, minh trang
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
cong tac » cong ty
quan cao » quang cao, quan cau, quan ao
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) xanh - ((thanh trung) or (hanh trang)) va dung cong tac quan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - ((thanh trung) OR (hanh trang)) va dung cong tac quan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) xanh - ((thanh trung) or (hanh trang)) va dung cong tac quan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) xanh - ((thanh trung) or (hanh trang)) va dung cong tac quan cao*.