Perhaps you should try some spelling variations:
khien hanh » hien hanh, khien canh, thien thanh
hanh xuc » hanh xu, hanh phuc, hanh duoc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
xuc may » xuc hay, truc may, phuc may
tinh va » tich va, trinh van, trinh vat
cuu tre » cua tre, cau tren, cau treo
va cuu » va cau, va chu, va huu
x hoi » xa hoi, o hoi, 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 ky nang ((x hoi) or (x ho)). dieu khien hanh xuc may tinh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((x hoi) OR (x ho)). dieu khien hanh xuc may tinh va cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) or (x ho)). dieu khien hanh xuc may tinh va cuu tre*.