Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc hanh
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
luu tre » luu tru, cuu tre, luy tre
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
vi luu » vi lua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang xa hoi. lieu va cau ((thuc van) or (thuc va)) hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang xa hoi. lieu va cau ((thuc van) OR (thuc va)) hanh vi luu tre*.