Perhaps you should try some spelling variations:
sach nay » sach hay, sach vay, sach nang
lang van » dang van, tang van, hoang van
sach tay » xach tay, sach hay, sach tai
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
ve cau » ke cau, va cau, ve cac
luc va » duc va, tuc va, loc va
cua te » cua tu
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach tay) or (sach nay)) lang van hoi. hieu ve cau luc va hanh vi ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tay) OR (sach nay)) lang van hoi. hieu ve cau luc va hanh vi ((cua te) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach tay) or (sach nay)) lang van hoi. hieu ve cau luc va hanh vi ((cua te) or (cua su))*.