Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
va thanh » gia thanh, ban thanh, va tinh
sang tao » hang tai
tao khoi » tao hoi, thao khoa, lao khoa
tu cach » tu cac
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cua triet, dua tren
hieu va » lieu va, hieu qua
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
cuu tre » cau tren, cau treo
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 sang tao khoi. hieu va cam duc va thanh tai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky sang tao khoi. hieu va cam duc va thanh tai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky sang tao khoi. hieu va cam duc va thanh tai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky sang tao khoi. hieu va cam duc va thanh tai ((cua tre) OR (cuu tre))*.