Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
ho chieu » hoc thieu, doi chieu, mot chieu
luan ung » luan hung, luon ung, luan chung
ung cong » dung cong, luong cong, duong cong
cong van » cong vang, cong san, song van
phan dau » phan tu
hang dau » hang va, hang tai

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 - sach dung luan ung cong van ((phan dau) OR (hang dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - sach dung luan ung cong van ((phan dau) OR (hang dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) xanh - sach dung luan ung cong van ((phan dau) OR (hang dau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - sach dung luan ung cong van ((phan dau) OR (hang dau))*.