Perhaps you should try some spelling variations:
hanh van » thanh van, khanh van, hanh va
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
cac lo » cac lop, cac co, cac bo
lo van » le van, vo van, so van

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang xa hoi. hieu ve cac lo van ((((han tai) or (hanh van))) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu ve cac lo van ((((han tai) OR (hanh van))) OR (hanh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. hieu ve cac lo van ((((han tai) or (hanh van))) or (hanh vi)) cua tre*.