Perhaps you should try some spelling variations:
tieng manh » tieng anh, tien manh, tieng han
hoc tieng » hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
trong van » trong cac
cong van » cong vang, cong san, song van
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 tieng manh - canh tranh cua nhung ((cong van) or (trong van)) chat cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieng manh - canh tranh cua nhung ((cong van) OR (trong van)) chat cau.
• Adding a wildcard symbol may retrieve word variants: hoc tieng manh - canh tranh cua nhung ((cong van) or (trong van)) chat cau*.