Perhaps you should try some spelling variations:
tien manh » tien anh, tien thanh, tieng anh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
trong van » trong cac
hoc tien » hoc tieng, hoc hien, hoc vien
cong van » cong vang, song van, cong tan
cong san » cong tac
chat cau » chat cam, chat cao, chat va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tien manh - canh tranh cua nhung ((((cong van) OR (cong san))) or (trong van)) chat cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tien manh - canh tranh cua nhung ((((cong van) OR (cong san))) OR (trong van)) chat cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tien manh - canh tranh cua nhung ((((cong van) OR (cong san))) or (trong van)) chat cau".
• Adding a wildcard symbol may retrieve word variants: hoc tien manh - canh tranh cua nhung ((((cong van) OR (cong san))) or (trong van)) chat cau*.