Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu
van thanh » ban thanh, van tuan
thanh cao » thanh ca, thanh cac, thanh thao
van dung » van dong, xay dung, tin dung
cong van » cong vang, cong san, song van
va dung » va duong, vat dung, va ung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (hoc hien)) xanh - hanh trinh ((va dung) OR (van dung)) cong van thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - hanh trinh ((va dung) OR (van dung)) cong van thanh cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - hanh trinh ((va dung) OR (van dung)) cong van thanh cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - hanh trinh ((va dung) OR (van dung)) cong van thanh cao*.