Perhaps you should try some spelling variations:
hoc tieng » hoc hien
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
manh cua » doanh cua, ban cua
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
chat cau » chat cam, chat cao, chat 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 tieng anh - canh manh cua nhung ((cong van) OR (song van)) ((chat cau) OR (chat va))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tieng anh - canh manh cua nhung ((cong van) or (song van)) ((chat cau) OR (chat va))~".
• Adding a wildcard symbol may retrieve word variants: hoc tieng anh - canh manh cua nhung ((cong van) or (song van)) ((chat cau) OR (chat va))*.