Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
xa thanh » va thanh, ha thanh, ta thanh
thanh ve » hanh ve, thanh va, thanh vien
va triet » va thiet, va trien, ve triet
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
vien da » vien dai, hien dai
nang o » nang co, nang ho, nang ro
tac xa » tuc xa, tac da
o hoi » co hoi, o hoc, o hai
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 ty nang o hoi. hieu ((vien bach) or (vien da)) tac xa thanh ve va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty nang o hoi. hieu ((vien bach) OR (vien da)) tac xa thanh ve va triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty nang o hoi. hieu ((vien bach) or (vien da)) tac xa thanh ve va triet*.