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
tren cau » tren ca, tren cay, tren tau
ty tren » tu tren, te tren, ty truyen

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