Perhaps you should try some spelling variations:
nang chon » nang cho, nang cao, nang hoc
van hanh » van thanh, ban hanh, van anh
chon hoc » cho hoc, chon loc, chung hoc
hieu van » hieu va, thien van, lieu va
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
cua cau » cua cac, cua chu, cua can
cua cay » cua 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) or (sach ty)) nang chon hoc. hieu van cac xuc van hanh vi ((cua cau) OR (cua cay))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach tu) OR (sach ty)) nang chon hoc. hieu van cac xuc van hanh vi ((cua cau) OR (cua cay))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach tu) or (sach ty)) nang chon hoc. hieu van cac xuc van hanh vi ((cua cau) OR (cua cay))*".