Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
sach va » sach xa, sach ha, sach dao
cua tuc » cua duc, cua tu, cua thuoc
va nang » van nang, da nang, cam nang
luc va » duc va, tuc va, loc va
cua te » cua tu
va cam » va cham, va cac, va cao
o hoi » co hoi, o hoc, o hai

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 va nang ((o hoi) or (x ho)). hieu va cam luc va hanh di ((cua te) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach va nang ((o hoi) OR (x ho)). hieu va cam luc va hanh di ((cua te) OR (cua tuc)).
• Adding a wildcard symbol may retrieve word variants: te sach va nang ((o hoi) or (x ho)). hieu va cam luc va hanh di ((cua te) or (cua tuc))*.