Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hieu van » hieu va, thien van, lieu va
hoc sach » hoc sinh, hoc cac, hoc anh
doan via » doan va, doan vi, doan viet
van doan » van doanh, van toan, van hoan
via cua » gia cua, gian cua, giau cua
ty nang » ky nang, ty xang, ty hang
xuc van » duc van, luc van, vuc van
van cam » van nam, van lam, van cau
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, x ho, 5 hoi
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: ((thuoc sach) OR (hoc sach)) ty nang ((x hoi) or (o hoi)). hieu van cam xuc van doan via cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) ty nang ((x hoi) OR (o hoi)). hieu van cam xuc van doan via cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) ty nang ((x hoi) or (o hoi)). hieu van cam xuc van doan via cua tu".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) ty nang ((x hoi) or (o hoi)). hieu van cam xuc van doan via cua tu*.