Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hieu thien » hieu hien, chieu chien, dieu khien
thu sach » tu sach, thuat sach, thuoc sach
hach xuc » thach duc, hanh xu, cach xu
sach ky » sac ky, sach y, sach ty
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
chu tre » cho tre, chu tri, cuu tre
xuc va » duc va, tuc va, luc va
va chu » va che, va cau, va chi
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang ((x hoi) OR (o hoi)). hieu thien hach xuc va tinh va chu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ((x hoi) OR (o hoi)). hieu thien hach xuc va tinh va chu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((x hoi) OR (o hoi)). hieu thien hach xuc va tinh va chu tre*.