Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
van dau » van dao, phan dau
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
van cau » van hau, van chat, toan cau
luc va » duc va, tuc va, loc va
me hoi » le hoi
vi cua » vai cua, di cua

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

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