Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
xang cho » sang cho, hang cho, bang cho
tang cho » trang cho, sang cho, hang cho
van cau » van dau, van hau, van chat
duc van » duc va, duc tan, duc manh
te sach » toc sach
van cac » van hac, van bac, dan cac
sach tu » sach thu, cach tu, sach ty
cua cau » cua cac, cua chu, cua cay
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu ((xang cho) or (tang cho)) hoc. hieu ((van cac) OR (van cau)) duc van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((xang cho) OR (tang cho)) hoc. hieu ((van cac) OR (van cau)) duc van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu ((xang cho) or (tang cho)) hoc. hieu ((van cac) OR (van cau)) duc van hanh vi cua cau*".