Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
thanh vi » hanh vi, thanh ve, nhanh vi
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cam luc » cam xuc, cau luc
cuu tre » cua tre, cau tren, cau treo
van cam » van nam, van lam, van cau
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
x hoi » o hoi, x ho, 5 hoi

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) or (xa hoi)). hieu van cam luc va ((thanh vi) OR (thanh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((x hoi) OR (xa hoi)). hieu van cam luc va ((thanh vi) OR (thanh va)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((x hoi) or (xa hoi)). hieu van cam luc va ((thanh vi) OR (thanh va)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((x hoi) or (xa hoi)). hieu van cam luc va ((thanh vi) OR (thanh va)) cuu tre*.