Perhaps you should try some spelling variations:
nhan thong » nhan trong, nha thong, nhan khong
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
thong tu » phong tuc, thong tin, thong ke
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » toan cao, toan ban, toan tap
tu hanh » du hanh, lu hanh, thuc hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (chieu tinh)) - nhan thong tu hanh ((cong dan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu tinh)) - nhan thong tu hanh ((cong dan) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu tinh)) - nhan thong tu hanh ((cong dan) or (cong san)) toan cau*.