Perhaps you should try some spelling variations:
trung thanh » truong thanh
thanh trong » thanh trung, tranh trong, hanh trong
manh trung » manh tung, thanh trung, manh hung
hoc chieu » hoc thieu, ho chieu, hoc dieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

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