Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh phan » thanh phan, anh phan, hanh nhan
cua nhung » va nhung
hanh han » hanh nhan, hanh san, anh han
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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 lang) or (dieu duong)) - ((hanh han) or (hanh phan)) cua nhung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (dieu duong)) - ((hanh han) OR (hanh phan)) cua nhung cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (dieu duong)) - ((hanh han) or (hanh phan)) cua nhung cong tan toan cao*.