Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
theo hien » theo chieu, thuc hien, thi hien
hanh tang » hanh trang, anh tang, hanh mang
cua khong » hua khong, cua phuong, cua thuong
tang cua » mang cua, hang cua, tang luan
cong van » cong vang, cong san, song van
toan cao » toan tap
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: ((theo hien) or (theo tieu)) hanh - hanh tang cua khong cong van ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo hien) OR (theo tieu)) hanh - hanh tang cua khong cong van ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo hien) or (theo tieu)) hanh - hanh tang cua khong cong van ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ((theo hien) or (theo tieu)) hanh - hanh tang cua khong cong van ((toan cao) OR (toan ban))*.