Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
theo chu » theo chieu, cho chu, chao chu
tung qua » dung qua, tuong quan, trung quan
qua dung » quang dung, su dung, qua song
cong tan » cong san, cong thanh, cong ty
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: ((theo chu) or (hoc thieu)) tinh - thanh tung qua dung ((cong tan) OR (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (hoc thieu)) tinh - thanh tung qua dung ((cong tan) OR (cong tac)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chu) or (hoc thieu)) tinh - thanh tung qua dung ((cong tan) OR (cong tac)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (hoc thieu)) tinh - thanh tung qua dung ((cong tan) OR (cong tac)) toan cau*.