Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, thong cong, nhung lang
tranh van » tran van, trinh van, thanh van
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - canh tranh van ((((nhung cong) OR (nhung don))) OR (hang cong)) manh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - canh tranh van ((((nhung cong) OR (nhung don))) or (hang cong)) manh toan tap~".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - canh tranh van ((((nhung cong) OR (nhung don))) or (hang cong)) manh toan tap*.