Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va cham » va chat, va tham
vai cua » dai cua, hai cua, lai cua
nang xa » nang x, nang ma, mang xa
anh vai » anh va, anh bai, anh van
vat anh » van anh, sat anh, dat anh
lang xa » lang ha, dang xay, lang van
ve tai » te tai, de tai, le tai
sach v » sach va, sach y, sach 2
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 v ((nang xa) or (lang xa)) hoi. hieu ((ve tai) or (va cham)) thuc vat anh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach v ((nang xa) OR (lang xa)) hoi. hieu ((ve tai) OR (va cham)) thuc vat anh vai cua te.
• Adding a wildcard symbol may retrieve word variants: thu sach v ((nang xa) or (lang xa)) hoi. hieu ((ve tai) or (va cham)) thuc vat anh vai cua te*.