Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
van hau » van ha, van hai, van dau
hau luc » hau loc, cau luc, nhan luc
luc van » luoc van, luu van, duc van
hanh te » hanh tu, hanh ve, hanh de
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu van hau luc van hanh te ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu van hau luc van hanh te ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu van hau luc van hanh te ((cua tre) or (cuu tre))*.