Perhaps you should try some spelling variations:
thanh tung » thanh cong
nguong dan » huong dan
cua nhung » va nhung
tien anh » tien manh, dien anh, tien thanh
tung cua » trung cua, tuong cua, dung cua
nong dan » cong dan, nong san, huong dan
toan cau » toan cao, toan ban, toan tap

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 anh) OR (tieng anh)) - thanh tung cua nhung ((nong dan) or (nguong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien anh) OR (tieng anh)) - thanh tung cua nhung ((nong dan) OR (nguong dan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tien anh) OR (tieng anh)) - thanh tung cua nhung ((nong dan) or (nguong dan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((tien anh) OR (tieng anh)) - thanh tung cua nhung ((nong dan) or (nguong dan)) toan cau*.