Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
hang vi » hang va, hanh vi, hang di
y nang » ky nang, ly nang, v nang
va cao » va co, va dao, va bao
tuc va » thuc va, truc va, duc va
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang x hoi. hieu ((va cao) or (va cac)) ((tuc va) or (tuc xa)) hang vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((va cao) OR (va cac)) ((tuc va) OR (tuc xa)) hang vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((va cao) or (va cac)) ((tuc va) or (tuc xa)) hang vi cua te*.