Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
vai cuu » vai cua
sach ky » sac ky, sach ty, sach kem
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
lo van » le van, vo van, do van
so van » su van, vo van
ve cac » va cac, vien cac

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 ky) OR (sach y)) nang xa hoi. hieu ve cac ((lo van) or (so van)) danh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) nang xa hoi. hieu ve cac ((lo van) OR (so van)) danh vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach y)) nang xa hoi. hieu ve cac ((lo van) or (so van)) danh vai cuu tre*".