Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
cac xuc » cam xuc, cac nuoc, chat xuc
doi cua » dai cua, hoi cua
xuc van » duc van, luc van, vuc van
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
cho hoc » khoa hoc
ty nang » ky nang, ty xang, ty hang
di cua » dai cua, de cua, do cua
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: te sach ty nang ((cho hoc) or (co hoc)). hieu ve cac xuc van hanh ((di cua) OR (doi cua)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang ((cho hoc) OR (co hoc)). hieu ve cac xuc van hanh ((di cua) OR (doi cua)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang ((cho hoc) or (co hoc)). hieu ve cac xuc van hanh ((di cua) OR (doi cua)) cau*".