Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hieu manh » chieu xanh, hieu nganh, dieu hanh
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
ban cong » bang cong, van cong, phan cong
cong tac » cong ty
tac tren » rac tren, tai tren, tap tren
tren ca » tren cay, tren co, tren c

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 manh) or (hieu quang)) - anh tang cua ban cong tac tren ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (hieu quang)) - anh tang cua ban cong tac tren ca.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu quang)) - anh tang cua ban cong tac tren ca*.