Perhaps you should try some spelling variations:
sach hay » sach han, sach ha, sach nay
hay lang » ha lang, tay lang, nhan lang
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
lang xa » lang ha, dang xay, lang van
van cau » van dau, van hau, van chat
phuc va » phuc vu, chuc va, thuc vat
thuc va » thuc vat, thuc dan, thuc day
vi cua » vai cua, di cua
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: so sach hay lang xa hoi. hieu van cau ((phuc va) or (thuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach hay lang xa hoi. hieu van cau ((phuc va) OR (thuc va)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sach hay lang xa hoi. hieu van cau ((phuc va) or (thuc va)) hanh vi cua te*.