Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
sang tao » hang tai
phan lap » phan dau
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
va phan » van phan, va phat, va phap
lap cua » lai cua, tap cua, lam cua
hieu v » hieu va, hieu ve, hieu 2
v pham » vi pham, d pham
cua tu » cua tuc, cua su, cua cu

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 (hoc sach)) ky sang tao hoi. hieu v pham duc va phan lap cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ky sang tao hoi. hieu v pham duc va phan lap cua tu.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) ky sang tao hoi. hieu v pham duc va phan lap cua tu*.