Perhaps you should try some spelling variations:
hoc thuyet » hoc chuyen
thuyet anh » thuyet kinh, thuy anh, thuyet dan
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
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: hoc thuyet anh - hanh tranh cua nhung ((cong dan) OR (cong san)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thuyet anh - hanh tranh cua nhung ((cong dan) OR (cong san)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thuyet anh - hanh tranh cua nhung ((cong dan) OR (cong san)) toan cau*.