Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trang » canh tranh, hanh trinh, minh trang
cua truong » xuan truong, cac truong, xa truong
cua trung » xuan trung, cua nhung, ba trung
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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: ho chieu xanh - ((hanh trang) or (thanh trung)) ((cua truong) OR (cua trung)) cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((hanh trang) OR (thanh trung)) ((cua truong) OR (cua trung)) cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((hanh trang) or (thanh trung)) ((cua truong) OR (cua trung)) cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((hanh trang) or (thanh trung)) ((cua truong) OR (cua trung)) cong tan toan cao*.