Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham duc » pham duc, cham soc, pham duy
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chay tren, chau tho, cho tre
tu cach » tu cac
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh

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 (thu sach)) ky tang xa hoi. hieu va cham duc va hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky tang xa hoi. hieu va cham duc va hanh lai chau tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ky tang xa hoi. hieu va cham duc va hanh lai chau tre*.