Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
cong dan » cong san, cong tan, huong dan
dan tao » dao tao, dan tay, dan tho
tao cao » bao cao, toan cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - ((thanh trung) or (thanh tung)) va nhung cong dan tao cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - ((thanh trung) OR (thanh tung)) va nhung cong dan tao cao.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - ((thanh trung) or (thanh tung)) va nhung cong dan tao cao*.