Perhaps you should try some spelling variations:
thuoc sach » hoc sach, thuat sach, thuoc sinh
hieu vien » hieu hien, hieu viec, thieu nien
nuoc sach » nguoi sach, hoc sach, cuoc cach
thanh ve » hanh ve, thanh va, thanh vien
xa thanh » va thanh, ha thanh, ta thanh
vien dai » hien dai
va triet » va thiet, va trien, ve triet
ty nang » ky nang, ty xang, ty hang
dai tac » dai tai, doi tac, da tac
tac xa » tuc xa, tac da
x hoi » o hoi, x ho, 5 hoi
ve va » ve van, te va, ke va

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 (nuoc sach)) ty nang ((x hoi) or (xa hoi)). hieu vien dai tac xa thanh ve va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (nuoc sach)) ty nang ((x hoi) OR (xa hoi)). hieu vien dai tac xa thanh ve va triet.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (nuoc sach)) ty nang ((x hoi) or (xa hoi)). hieu vien dai tac xa thanh ve va triet*.