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 ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
xuc may » xuc hay, truc may
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 ty nang x hoi. dieu khien hach ((xuc may) or (phuc may)) tich va chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. dieu khien hach ((xuc may) OR (phuc may)) tich va chu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. dieu khien hach ((xuc may) or (phuc may)) tich va chu tre*.