Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
tong cong » trong cong, cong cong, dung cong
tranh va » tranh van, trinh va, thanh va
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
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: theo tieu xanh - canh ((tranh va) OR (trang va)) tong cong dan ((phan dau) or (hang dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - canh ((tranh va) OR (trang va)) tong cong dan ((phan dau) OR (hang dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - canh ((tranh va) OR (trang va)) tong cong dan ((phan dau) or (hang dau))".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - canh ((tranh va) OR (trang va)) tong cong dan ((phan dau) or (hang dau))*.