Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, hanh mang, nhanh quang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh van » trinh han, trinh quan, trinh toan
hoc hieu » hoc thieu, hoc hien, doc hieu
anh dang » anh dong, anh dung, anh bang
ban cong » bang cong, van cong, phan cong
van cau » van dau, van hau, van chat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - ((anh dang) or (nhanh mang)) cua ban cong trinh van cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((anh dang) OR (nhanh mang)) cua ban cong trinh van cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((anh dang) or (nhanh mang)) cua ban cong trinh van cau*.