Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
day dang » da dang, dai dang, day dan
dang de » dang deo, dung de, dang do
cuu tre » cua tre, cau tren, cau treo
vu sai » vu hai, vu san, vu dai
sai ky » sac ky
nang o » nang co, nang ho, nang ro
ve cac » vien cac
de cuu » de cua
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: vu sai ky nang o hoi. hieu ((ve cac) or (va cac)) thuc day dang de cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sai ky nang o hoi. hieu ((ve cac) OR (va cac)) thuc day dang de cuu tre.
• Adding a wildcard symbol may retrieve word variants: vu sai ky nang o hoi. hieu ((ve cac) or (va cac)) thuc day dang de cuu tre*.