Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thu sach » tu sach, thuat sach, thuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
tan hanh » tan thanh, tang hanh, toan hanh
cam duc » cam xuc, cao duc, pham duc
cua tre » cuu tre, cua triet, dua tren
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
va cam » va cham, va cac, va cao
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: ((thu sach) or (hoc sach)) ky lang xa hoi. hieu va cam duc tan hanh thai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (hoc sach)) ky lang xa hoi. hieu va cam duc tan hanh thai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (hoc sach)) ky lang xa hoi. hieu va cam duc tan hanh thai ((cua tre) or (cua te))*.