Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
sang tao » hang tai
tao khoi » tao hoi, thao khoa, lao khoa
phan lam » phang lam, phan lap, phan lan
hieu ve » hieu va, hieu van
lam cua » nam cua, lam chat
ky sang » ky nang, ky dang, ky tang
va phan » van phan, va phat, va phap
hieu v » hieu va, hieu 2, hieu _
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 khoi. ((hieu v) or (hieu ve)) pham duc va phan lam cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ky sang tao khoi. ((hieu v) OR (hieu ve)) pham duc va phan lam cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (doc sach)) ky sang tao khoi. ((hieu v) or (hieu ve)) pham duc va phan lam cua te*.