Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu quan » hieu qua, lieu quan, thien quan
khach san » khach hang, thanh san
cua nhung » va nhung
hieu van » hieu va, thien van, lieu va
hanh han » hanh nhan, hanh phan, hanh san
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 van) or (hieu quan)) - ((hanh han) or (khach san)) cua nhung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu van) OR (hieu quan)) - ((hanh han) OR (khach san)) cua nhung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu van) or (hieu quan)) - ((hanh han) or (khach san)) cua nhung cong dan toan cau*.