Perhaps you should try some spelling variations:
hanh sinh » hanh tinh, hanh dinh, hinh sinh
vat nhung » va nhung, vap nhung, vai nhung
moi hieu » moi dieu, hoi hieu, doi chieu
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
chan cau » phan cau, can cau, chinh cau
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho hieu) or (moi hieu)) lang - hanh sinh vat nhung ((cong tan) or (cong san)) chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (moi hieu)) lang - hanh sinh vat nhung ((cong tan) OR (cong san)) chan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) or (moi hieu)) lang - hanh sinh vat nhung ((cong tan) or (cong san)) chan cau*.