Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
cam cuu » cham cuu, cap cuu
doi cua » dai cua, hoi cua
xang x » nang x
va cam » va cham, va cac, va cao
cua te » cua tu
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: thu sach ty xang x hoi. hieu va cam cuu ((van ban) or (van thanh)) doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty xang x hoi. hieu va cam cuu ((van ban) OR (van thanh)) doi cua te.
• Adding a wildcard symbol may retrieve word variants: thu sach ty xang x hoi. hieu va cam cuu ((van ban) or (van thanh)) doi cua te*.