Perhaps you should try some spelling variations:
chieu chien » thien chien, hieu hien
chien hach » thien hach, chien dich, hien hanh
thanh va » thanh van, hanh va, thanh ha
tu sach » thu sach, su sach, tu cach
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
huu tre » huu tri, cuu tre, huu them
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
va huu » vu huu
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: ((tu sach) or (te sach)) ty nang x hoi. chieu chien hach ((xuc va) OR (luc va)) thanh va huu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty nang x hoi. chieu chien hach ((xuc va) OR (luc va)) thanh va huu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ty nang x hoi. chieu chien hach ((xuc va) OR (luc va)) thanh va huu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ty nang x hoi. chieu chien hach ((xuc va) OR (luc va)) thanh va huu tre*.