Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
ho chieu » theo chieu, hoc thieu, doi chieu
dung hoc » dong hoc, dung thuoc, trung hoc
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (ho chieu)) xanh - thanh dung hoc thuong ((cong ban) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (ho chieu)) xanh - thanh dung hoc thuong ((cong ban) OR (cong tan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (ho chieu)) xanh - thanh dung hoc thuong ((cong ban) or (cong tan)) toan cau*.