Perhaps you should try some spelling variations:
doanh cua » doanh luan
van tuan » van quan, anh tuan
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
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 sach y nang ma hoi. hieu va cam xuc ((van ban) or (van tuan)) doanh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu va cam xuc ((van ban) OR (van tuan)) doanh cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu va cam xuc ((van ban) or (van tuan)) doanh cua tre*.