Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van ban
te sach » toc sach
van anh » van thanh, tuan anh, van minh
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
cho hoc » co hoc, khoa hoc
ty nang » ky nang, ty hang, ly nang
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 ((ty nang) OR (ty xang)) cho hoc. hieu van cac xuc ((van hanh) or (van anh)) vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty xang)) cho hoc. hieu van cac xuc ((van hanh) OR (van anh)) vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) OR (ty xang)) cho hoc. hieu van cac xuc ((van hanh) or (van anh)) vi cua cau*".