Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
sang tao » hang tai
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
ban anh » ban banh, ban danh, bang anh
hieu va » hieu qua
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de cua
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky sang tao hoi. ((hieu va) or (lieu va)) cham duc ((ban anh) or (ban hanh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky sang tao hoi. ((hieu va) OR (lieu va)) cham duc ((ban anh) OR (ban hanh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky sang tao hoi. ((hieu va) or (lieu va)) cham duc ((ban anh) or (ban hanh)) di cua tre*.