Perhaps you should try some spelling variations:
hoc thuyet » hoc chuyen
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoc tren » moc tren, hoc truyen, thuoc tren
cong dan » cong san, cong tan, huong dan
gian cau » gian chau, gian cac, gian cam

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) or (hoc tren))) or (hoc hien)) anh - hanh tranh cua nhung cong dan gian cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc thuyet) OR (hoc tren))) OR (hoc hien)) anh - hanh tranh cua nhung cong dan gian cau.
• Adding a wildcard symbol may retrieve word variants: ((((hoc thuyet) or (hoc tren))) or (hoc hien)) anh - hanh tranh cua nhung cong dan gian cau*.