Perhaps you should try some spelling variations:
sach thieue » sach thue
hieu viec » nhieu viec, hieu ve, sieu viet
viec bach » vien bach, viec ban, viec bao
bach tuoc » sach duoc, sach nuoc
tuoc van » luoc van, quoc van, thuoc von
van hanh » van thanh, ban hanh, van anh
nang ro » nang co, nang ho, nang ra
hanh ca » hanh cac, hanh cat, hanh cua
cua tre » cua te, cuu tre, cua triet
ro hoi » co hoi, o hoi, mo hoi
ca cua » co cua

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 thieu) or (sach thieue)) nang ro hoi. hieu viec bach tuoc van hanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thieu) OR (sach thieue)) nang ro hoi. hieu viec bach tuoc van hanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach thieu) or (sach thieue)) nang ro hoi. hieu viec bach tuoc van hanh ca cua tre*.