Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cua viet » ca viet, hoa viet, cua vat
tu cach » tu cac
ky dinh » ky sinh, ky danh, ky kinh
dinh xa » dinh va, dinh xu, binh xa
hieu ve » hieu va, hieu van
va dinh » van dinh, va kinh, va tinh
dinh ba » dinh gia, dinh van, dinh lam
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
ba cua » ban cua, bai cua, bao cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (toc sach)) ky dinh xa hoi. hieu ve cam xuc va dinh ba cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (toc sach)) ky dinh xa hoi. hieu ve cam xuc va dinh ba cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (toc sach)) ky dinh xa hoi. hieu ve cam xuc va dinh ba cua viet*.