Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
vu khanh » vu thanh, van khanh, duy khanh
lai cua » dai cua, hai cua, lai chau
dan lai » dan loai, dan lap, dan lat
truc va » thuc va, thuc vat, trung va
van cau » van dau, van hau, van chat
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
vu khac » vu kham, bui khac
va dan » ca dan, va dao, va dau
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (((vu khac) OR (vu khanh)))) ky nang ma hoi. thien van cau truc va dan lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (((vu khac) OR (vu khanh)))) ky nang ma hoi. thien van cau truc va dan lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (((vu khac) OR (vu khanh)))) ky nang ma hoi. thien van cau truc va dan lai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (((vu khac) OR (vu khanh)))) ky nang ma hoi. thien van cau truc va dan lai cua triet*.