Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hang tai » hang va, dung tai
hanh tai » thanh tai, han tai, hinh tai
sach ty » sach tu, sach thu, xach tay
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
lo van » le van, vo van, so van
cac lo » cac lop, cac co, cac bo

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

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