Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » thuat sach, thuoc sach, thu hoach
khanh vi » hanh vi, khanh v, nhanh vi
xa khanh » xa thanh, van khanh, dat khanh
cua tre » cua te, cuu tre, dua tren
cao xuc » cam xuc, cao duc, cao suc
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
xuc xa » tuc xa, buc xa
va cao » va cac, va co, va dao

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)) ky nang ma hoi. hieu va cao xuc xa khanh vi ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang ma hoi. hieu va cao xuc xa khanh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang ma hoi. hieu va cao xuc xa khanh vi ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang ma hoi. hieu va cao xuc xa khanh vi ((cua tre) OR (cua triet))*.