Perhaps you should try some spelling variations:
hanh tong » hanh trong, han tong, hanh dong
qua nhung » quan nhung, cua nhung, qua chung
ho chieu » theo chieu, hoc thieu, doi chieu
tong qua » thong qua, tong quan, trong qua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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: ((ho chieu) or (hoc hien)) sach - hanh tong qua nhung ((cong dan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc hien)) sach - hanh tong qua nhung ((cong dan) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc hien)) sach - hanh tong qua nhung ((cong dan) or (cong san)) toan cau*.