Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
ty nang » ky nang, ty hang, ly nang
qua cac » cua cac
va anh » van anh, va danh, va hanh
anh de » hanh de, anh d, anh ve
de cua » le cua, te cua, dieu cua
qua ca » qua cua, qua cai, quan cau
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ty nang) OR (ty xang)) x hoi. hieu ((qua ca) or (qua cac)) duc va anh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty nang) OR (ty xang)) x hoi. hieu ((qua ca) OR (qua cac)) duc va anh de cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty nang) OR (ty xang)) x hoi. hieu ((qua ca) or (qua cac)) duc va anh de cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty nang) OR (ty xang)) x hoi. hieu ((qua ca) or (qua cac)) duc va anh de cua triet*.