Perhaps you should try some spelling variations:
nang chon » nang cao, nang hoc, sang cho
toc sach » hoc sach, doc sach, thuoc sach
nang cho » ngang cho, nang cao, sang cho
van hanh » van thanh, ban hanh, van anh
cac vuc » cac nuoc, cac vung, cac cuoc
cua cau » cua cac, cua cay, cua can
vuc van » duc van, luc van, thuc van
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach ty
cua chu » sua chua
ve cac » va cac, vien cac

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

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