Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
tieu xanh » tieu danh, chieu xanh, dieu hanh
tinh bang » tinh sang, tinh lang, tinh quang
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
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 tieu xanh - ((anh tang) or (tinh bang)) cua ((nhung cong) or (dung cong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((anh tang) OR (tinh bang)) cua ((nhung cong) OR (dung cong)) tan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((anh tang) or (tinh bang)) cua ((nhung cong) or (dung cong)) tan toan cao*.