Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
ganh nang » anh nang, nganh nong, van nang
nang cua » mang cua, hang cua, nang dua
ban cong » bang cong, van cong, phan cong
cong tai » cong thai, cong tac, dong tai
tai tren » thai tren, thi tren, gai tren
tren cau » tren ca, tren cay, tren tau

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