Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
hanh hang » thanh hang, hang hang, hanh han
thi hieu » thi chieu, thi hien, thi dieu
cong san » cong tac
ran cau » van cau, ban cau, tran chau
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (thi hieu)) xanh - hanh hang va nhung cong san ((ran cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (thi hieu)) xanh - hanh hang va nhung cong san ((ran cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (thi hieu)) xanh - hanh hang va nhung cong san ((ran cau) or (can cau))*.