Perhaps you should try some spelling variations:
kham cac » khai cac, kham cuoc, phan cac
thu nang » thi nang, thu hang, thu bang
sach thu » sach thue, sach thieu, sach tham
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
cac ban » cac dan, cac van, can ban
va kham » va cham, va khao, va tham
hieu va » lieu va, hieu qua
anh de » hanh de, anh d, anh du
anh ve » hanh ve, anh va, anh viet
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thu nang x hoi. hieu va kham cac ban ((anh de) OR (anh ve)) ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang x hoi. hieu va kham cac ban ((anh de) OR (anh ve)) ((cua tre) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu nang x hoi. hieu va kham cac ban ((anh de) OR (anh ve)) ((cua tre) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: te sach thu nang x hoi. hieu va kham cac ban ((anh de) OR (anh ve)) ((cua tre) or (cua tu))*.