Perhaps you should try some spelling variations:
hanh tran » hanh trang, thanh tran, hanh tram
chu xanh » chu manh, chieu xanh, chua xang
tran van » luan van
van hang » van khang, van hoang, van thang
nong san » dong san, nong dan, trong san
cong san » cong tac
than cao » toan cao, thai cao, than cap
chu van » cuu van, chu han

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 xanh) or (chu van)) - hanh tran van hang ((nong san) OR (cong san)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chu van)) - hanh tran van hang ((nong san) OR (cong san)) than cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (chu van)) - hanh tran van hang ((nong san) OR (cong san)) than cao*".