Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
van hanh » ban hanh, van ban, van minh
hieu van » hieu va, thien van, lieu va
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
van anh » tuan anh, van minh
sach ty » sach y, sach tu, sach thu
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
cho hoc » co hoc, khoa hoc
ty danh » ty doanh, ty anh, ky danh
cua cau » cua cac, cua chu, cua cay

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 danh cho hoc. hieu van cac xuc ((van hanh) or (((van anh) OR (van thanh)))) vai cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty danh cho hoc. hieu van cac xuc ((van hanh) OR (((van anh) OR (van thanh)))) vai cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty danh cho hoc. hieu van cac xuc ((van hanh) or (((van anh) OR (van thanh)))) vai cua cau*".