Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
tong cong » trong cong, cong cong, dung cong
theo chu » cho chu, chao chu, theo yeu
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) OR (theo chu)) xanh - canh tranh va tong cong dan phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo chu)) xanh - canh tranh va tong cong dan phan dau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo chu)) xanh - canh tranh va tong cong dan phan dau*.