Perhaps you should try some spelling variations:
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
sang tao » hang tai
su sach » vu sach
ca viet » va viet, co viet, hoa viet
hieu ve » hieu va, hieu van
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang
so sach » so sanh, bo sach, co sach
so viet » hoc viet
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ky sang tao hoi. hieu ve nam thuc dan hanh vi ((ca viet) or (so viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky sang tao hoi. hieu ve nam thuc dan hanh vi ((ca viet) OR (so viet)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky sang tao hoi. hieu ve nam thuc dan hanh vi ((ca viet) or (so viet))*.