Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
van thanh » ban thanh, van tuan
thanh ban » thanh san, thanh van, thanh bac
trang va » hang va
tran van » luan van

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