Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sang tao » hang tai
tao khoi » tao hoi, thao khoa, lao khoa
dinh lap » dinh lam, trinh lap, dinh lang
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
ve pham » v pham, ve phat, le pham
ve phan » va phan, ke phan, ve phat
va dinh » van dinh, va kinh, va tinh
lap cua » lai cua, tap cua, lam cua
cua te » cua tu

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 ky sang tao khoi. hieu ((((ve pham) OR (vi pham))) or (ve phan)) duc va dinh lap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky sang tao khoi. hieu ((((ve pham) OR (vi pham))) OR (ve phan)) duc va dinh lap cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky sang tao khoi. hieu ((((ve pham) OR (vi pham))) or (ve phan)) duc va dinh lap cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ky sang tao khoi. hieu ((((ve pham) OR (vi pham))) or (ve phan)) duc va dinh lap cua te*.