Perhaps you should try some spelling variations:
hien hanh » dieu hanh
bieu hien » dieu hien, dieu khien, bien phien
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
va cuu » va cau, va chu
va huu » vu 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)). bieu hien hanh xuc may tinh ((va cuu) OR (va huu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((x hoi) OR (x ho)). bieu hien hanh xuc may tinh ((va cuu) OR (va huu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((x hoi) or (x ho)). bieu hien hanh xuc may tinh ((va cuu) OR (va huu)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) or (x ho)). bieu hien hanh xuc may tinh ((va cuu) OR (va huu)) tre*.