Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
tang xa » trang xa, tang ma, lang xa
cua tre » cuu tre, cua triet, dua tren
y tang » ky tang, 6 tang, 7 tang
cam lo » nam lo, cam ly, cam o
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y tang xa hoi. hieu van ((cham h'roi) or (cam lo)) va thanh vai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y tang xa hoi. hieu van ((cham h'roi) OR (cam lo)) va thanh vai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y tang xa hoi. hieu van ((cham h'roi) or (cam lo)) va thanh vai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: thu sach y tang xa hoi. hieu van ((cham h'roi) or (cam lo)) va thanh vai ((cua tre) OR (cua te))*.