Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
bo sach » co sach, hoc sach
ty hang » ly hang, ty xang, thi hang
hang xa » hoang xa, hang va, hang ca
hieu ve » hieu va, hieu van
hanh va » hang va, hanh vi
dam tuc » dam thuc, dao tuc, nam thuc
va hanh » van hanh, va thanh, va danh
dam tu » nam tu, cam tu, tam tu
va cua » va chua, via cua, ca cua
cua te » cua tu

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) or (bo sach)) ty hang xa hoi. hieu ve ((dam tuc) or (dam tu)) va hanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (bo sach)) ty hang xa hoi. hieu ve ((dam tuc) OR (dam tu)) va hanh va cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (bo sach)) ty hang xa hoi. hieu ve ((dam tuc) or (dam tu)) va hanh va cua te*.