Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh luan
cong san » cong tac
san van » tan van, luan van, tran 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) or (theo chieu)) xanh - hanh ((trinh cua) OR (trinh quan)) nhung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chieu)) xanh - hanh ((trinh cua) OR (trinh quan)) nhung cong san van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chieu)) xanh - hanh ((trinh cua) OR (trinh quan)) nhung cong san van ban*".