Perhaps you should try some spelling variations:
khien thich » bien thich, kien trich, khuyen khich
khien tinh » thien tinh, bien tinh, dien tinh
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((khien tinh) OR (khien thich)) - manh trung cua nhung cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((khien tinh) OR (khien thich)) - manh trung cua nhung cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((khien tinh) OR (khien thich)) - manh trung cua nhung cong dan than cau*.