Perhaps you should try some spelling variations:
thao khoa » thai khoa, toan khoa, pham khoa
tao khoi » tao hoi, lao khoa, tao boi
va doanh » van doanh, vay doanh, va danh
tu cach » tu cac
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky nang ((tao khoi) or (thao khoa)). hieu va cam duc va doanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang ((tao khoi) OR (thao khoa)). hieu va cam duc va doanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky nang ((tao khoi) or (thao khoa)). hieu va cam duc va doanh tai cua tre*.