Perhaps you should try some spelling variations:
dau thuc » dan thuc, dai thuc, dam thuc
thuc ban » thuoc ban, thuc dan, thu ban
ban hanh » ban hang
cau tren » cu tren, dau tren, ca tren
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau treo
va dau » va dao

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 ty nang xa hoi. lieu va dau thuc ban hanh di ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang xa hoi. lieu va dau thuc ban hanh di ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang xa hoi. lieu va dau thuc ban hanh di ((cuu tre) or (cau tren))*.