Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dinh vai » dinh van, dinh vi, dinh va
hieu van » hieu va, thien van, lieu va
toc sach » hoc sach, doc sach, thuoc sach
van chat » cao chat
thu sach » tu sach, thuat sach, thuoc sach
nang ma » tang ma, sang ma, nang cao
vai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, luc va, xac va
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: ((toc sach) or (thu sach)) ky nang ma hoi. hieu van chat ((xuc va) OR (tuc va)) dinh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thu sach)) ky nang ma hoi. hieu van chat ((xuc va) OR (tuc va)) dinh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (thu sach)) ky nang ma hoi. hieu van chat ((xuc va) OR (tuc va)) dinh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thu sach)) ky nang ma hoi. hieu van chat ((xuc va) OR (tuc va)) dinh vai cua triet*.