Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
tong cong » trong cong, cong cong, dung cong
ho chieu » hoc thieu, doi chieu, mot chieu
tran van » luan van
cong san » cong tac
san gian » dan gian, san giao, van gian
gian cua » gian xu, ban cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) xanh - hanh ((hang va) or (tran van)) tong cong san gian cua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - hanh ((hang va) OR (tran van)) tong cong san gian cua.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) xanh - hanh ((hang va) or (tran van)) tong cong san gian cua".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) xanh - hanh ((hang va) or (tran van)) tong cong san gian cua*.