Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
so sach » so sanh, co sach, hoc sach
bo sach » co sach, hoc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
hanh de » hanh ve, hanh kem
xuc va » tuc va, luc va, xac va
de cua » le cua, te cua, dieu cua

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 (bo sach)) ky lang xa hoi. hieu qua cac ((xuc va) or (duc va)) hanh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ky lang xa hoi. hieu qua cac ((xuc va) OR (duc va)) hanh de cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ky lang xa hoi. hieu qua cac ((xuc va) or (duc va)) hanh de cua triet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ky lang xa hoi. hieu qua cac ((xuc va) or (duc va)) hanh de cua triet*.