Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
trong hiep » trong dieu
hiep trong » tiep trong, nghiep trong, nhiem trong
tieu xanh » tieu danh, chieu xanh, dieu hanh
tiep danh » tieu danh, thien danh, tiep can
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu xanh) or (tiep danh)) - thanh trong hiep trong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (tiep danh)) - thanh trong hiep trong cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (tiep danh)) - thanh trong hiep trong cong dan than cao*.