Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
trang va » hang va
tran van » luan van
cong san » cong tac
toan cao » toan ban, toan tap
tay cao » tao cao, tay co

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