Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
hieu va » lieu va, hieu qua
nang ho » nang hoc, nang co, tang ho
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
ho hai » hoc hai, pho hai, cho hai
va cam » va cham, va cac, va cao
y nang » ky nang, ly nang, v nang
anh di » danh di, xanh di, anh du

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) OR (te sach)) y nang ho hai. hieu va cam cuc ban ((anh di) or (anh d)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y nang ho hai. hieu va cam cuc ban ((anh di) OR (anh d)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) y nang ho hai. hieu va cam cuc ban ((anh di) or (anh d)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) y nang ho hai. hieu va cam cuc ban ((anh di) or (anh d)) cua tre*.