Perhaps you should try some spelling variations:
khien hach » thien hach, khien thich, hien hanh
phuc may » hoc may, chua may, truc may
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
xuc may » xuc hay, truc may
tinh va » tich va, trinh van, trinh vat
chu tre » cho tre, chu tri, cuu tre
va chu » va che, va cau, va chi
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 ky nang x hoi. dieu khien hach ((xuc may) OR (phuc may)) tinh va chu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. dieu khien hach ((xuc may) OR (phuc may)) tinh va chu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. dieu khien hach ((xuc may) OR (phuc may)) tinh va chu tre*.