Perhaps you should try some spelling variations:
te sach » toc sach
van anh » van thanh, tuan anh, van minh
duc van » duc va, duc tan, duc manh
cua cau » cua cac, cua chu, cua cay
cho hoc » co hoc, khoa hoc
vu nang » vuc nang, va nang, vu dang
v nang » va nang, van nang, voi nang
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua
de coc » de hoc, de cac
de co » ke co

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 ((v nang) OR (vu nang)) cho hoc. hieu ((de coc) or (de co)) duc van anh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (vu nang)) cho hoc. hieu ((de coc) OR (de co)) duc van anh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((v nang) OR (vu nang)) cho hoc. hieu ((de coc) or (de co)) duc van anh vi cua cau*".