Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh toan » tinh toan, thanh toan, trinh han
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh van » trinh han, trinh quan, dinh van
cong sang » cong lang, cong vang, cong bang
cong san » cong tac
than cao » toan cao, thai cao, than cap

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