Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
hieu xanh » chieu xanh, hieu manh, hieu nganh
cong cong » cong dong, trong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cong van » cong vang, cong san, song van
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - ((hanh tranh) OR (hanh trinh)) cua cong cong van ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh tranh) OR (hanh trinh)) cua cong cong van ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((hanh tranh) OR (hanh trinh)) cua cong cong van ((toan tap) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh tranh) OR (hanh trinh)) cua cong cong van ((toan tap) or (toan ban))*.