Perhaps you should try some spelling variations:
thieu quang » thien quan, trien quang, hieu quan
thanh thanh » nhanh thanh, thanh toan, thanh phan
hieu quang » hieu quan, hieu qua, diep quang
trung cong » truong cong, trong cong, trung uong
thanh cua » tranh cua, than cua, hanh cua
cua trung » cua truong, xuan trung, cua nhung
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tap, toan tai
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 ((hieu quang) or (thieu quang)) - thanh thanh cua trung cong tan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quang) OR (thieu quang)) - thanh thanh cua trung cong tan ((toan cau) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quang) or (thieu quang)) - thanh thanh cua trung cong tan ((toan cau) OR (toan cao))*".