Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
qua cam » qua cham, qua cac, qua ca
cam duc » cam xuc, cao duc, pham duc
danh vi » hanh vi, dinh vi, danh va
danh di » danh du, xanh di, danh dien

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky lang) or (ky tang)) xa hoi. hieu qua cam duc va ((danh vi) OR (danh di)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky lang) OR (ky tang)) xa hoi. hieu qua cam duc va ((danh vi) OR (danh di)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky lang) or (ky tang)) xa hoi. hieu qua cam duc va ((danh vi) OR (danh di)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky lang) or (ky tang)) xa hoi. hieu qua cam duc va ((danh vi) OR (danh di)) cua triet*.