Perhaps you should try some spelling variations:
hanh tang » hanh trang, anh tang, hanh mang
theo chu » theo chieu, cho chu, chao chu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap
tang va » trang va, tang van, thang va
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (theo tieu)) xanh - hanh tang va hang ((cong dan) OR (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (theo tieu)) xanh - hanh tang va hang ((cong dan) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chu) or (theo tieu)) xanh - hanh tang va hang ((cong dan) OR (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (theo tieu)) xanh - hanh tang va hang ((cong dan) OR (cong tan)) toan cau*.