Perhaps you should try some spelling variations:
te sach » toc sach
hanh va » hang va
cau luc » cau truc, cau phuc
hieu ke » hieu kem, chieu ke, hieu ky
chua su » cua su, chua cu, chua tu
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
ma hoi » xa hoi, ma hoa, me hoi
ke cau » ket cau

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 y nang ((ma hoi) or (mai hoi)). hieu ke cau luc va ((hanh va) or (hanh vi)) chua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((ma hoi) OR (mai hoi)). hieu ke cau luc va ((hanh va) OR (hanh vi)) chua su.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) or (mai hoi)). hieu ke cau luc va ((hanh va) or (hanh vi)) chua su*.