Perhaps you should try some spelling variations:
trinh nhung » trinh phuong, trinh dung
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
thanh tra » thanh toan, thanh hoa
hanh tram » hanh tam, hanh trang, thanh tran
van thanh » ban thanh, van tuan
van toan » van tuan, van tan, manh toan

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 xanh - ((thanh tra) or (hanh tram)) trinh nhung cong ((van toan) OR (van thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - ((thanh tra) OR (hanh tram)) trinh nhung cong ((van toan) OR (van thanh)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - ((thanh tra) or (hanh tram)) trinh nhung cong ((van toan) OR (van thanh)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - ((thanh tra) or (hanh tram)) trinh nhung cong ((van toan) OR (van thanh)) cao*.