Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
dang cong » dung cong
nam thanh » pham thanh, ban thanh, tai thanh
anh dang » anh dong, anh dung, anh bang
dang cua » dung cua, dong cua, mang cua
cua dang » cua cong, cua ban
nam toan » nam tan, tam toan, nam thang

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 dang cua dang cong ((nam toan) or (nam thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - anh dang cua dang cong ((nam toan) OR (nam thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - anh dang cua dang cong ((nam toan) or (nam thanh)) cau*.