Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
cam tuc » cam xuc, cam tu, nam thuc
va dung » van dung, va duong, vat dung
tai cua » thai cua, tai cuc, tri cua
y nang » ly nang, v nang, may nang
mo hoi » mo phoi, mo hoc, co hoi
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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) OR (thu sach)) ((y nang) or (ky nang)) mo hoi. lieu va cam tuc va dung tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ((y nang) OR (ky nang)) mo hoi. lieu va cam tuc va dung tai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ((y nang) or (ky nang)) mo hoi. lieu va cam tuc va dung tai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ((y nang) or (ky nang)) mo hoi. lieu va cam tuc va dung tai cua triet*.