Perhaps you should try some spelling variations:
khuyen khich » chuyen kinh, khuyen hoc
khien thich » bien thich, kien trich, thien nghich
khien tinh » thien tinh, bien tinh, dien tinh
manh tuong » manh tung, manh cuong, minh tuong
nhung cong » dung cong, thong cong, hang cong
tuong cua » truong cua, huong cua, thong cua
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cap » khan cap, thanh lap, thanh cac

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) OR (khuyen khich)))) - manh tuong cua nhung cong tan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((khien tinh) OR (((khien thich) OR (khuyen khich)))) - manh tuong cua nhung cong tan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((khien tinh) or (((khien thich) OR (khuyen khich)))) - manh tuong cua nhung cong tan than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((khien tinh) or (((khien thich) OR (khuyen khich)))) - manh tuong cua nhung cong tan than cap*.