Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
va truong » van truong, xa truong, va thuong
san nhanh » san thanh, nhan nhanh, ban hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
va trong » va thong, va tuong, va trung
ha trung » he trung, ba trung, va trung
cong san » cong tac
nhanh va » hanh va, nhan va, nhanh ha

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 - canh tranh ((((va trong) or (ha trung))) or (va truong)) cong san nhanh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh ((((va trong) OR (ha trung))) OR (va truong)) cong san nhanh va.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh ((((va trong) or (ha trung))) or (va truong)) cong san nhanh va*.