Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
sang tao » hang tai
phan lap » phan dau
doc sach » hoc sach, nuoc sach, dac sac
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
ve pham » vi pham, ve phan, ve phat
va phan » van phan, va phat, va phap
lap cua » lai cua, tap cua, lam cua
v pham » vi pham, d pham
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) OR (doc sach)) ky sang tao hoi. hieu ((ve pham) or (v pham)) duc va phan lap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ky sang tao hoi. hieu ((ve pham) OR (v pham)) duc va phan lap cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ky sang tao hoi. hieu ((ve pham) or (v pham)) duc va phan lap cua te".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) ky sang tao hoi. hieu ((ve pham) or (v pham)) duc va phan lap cua te*.