Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc va
truc van » truc va, truc ban, truc dan
vu sach » vu bach, su sach, vu khach
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
ty nang » ky nang, ty xang, ty hang
sach ty » sach y, sach tu, sach thu
di cuu » di cau, di cua, dinh cuu
va dau » va dao
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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 ((x hoi) OR (o hoi)). lieu va dau ((truc van) or (thuc van)) hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang ((x hoi) OR (o hoi)). lieu va dau ((truc van) OR (thuc van)) hanh di cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang ((x hoi) OR (o hoi)). lieu va dau ((truc van) or (thuc van)) hanh di cuu tre*".