Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tac » cong ty
toan cau » 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 hieu lang - hanh trung cap nhung ((cong tac) or (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - hanh trung cap nhung ((cong tac) OR (cong thanh)) toan cau*.