Perhaps you should try some spelling variations:
dau thuc » dan thuc, dai thuc, dam thuc
thuc ban » thuoc ban, thuc dan, thu ban
hanh de » hanh ve, hanh kem
hanh di » hanh vi, hang di, danh di
vu sach » vu bach, su sach, vu khach
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
cuu tre » cua tre, cau tren, 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) or (ty hang)) xa hoi. lieu va dau thuc ban ((hanh di) OR (hanh de)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ty nang) OR (ty hang)) xa hoi. lieu va dau thuc ban ((hanh di) OR (hanh de)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ty nang) or (ty hang)) xa hoi. lieu va dau thuc ban ((hanh di) OR (hanh de)) cuu tre*".