Perhaps you should try some spelling variations:
ve triet » va trien, su triet
ban hang » ngan hang
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
sach 2 » sach y
va cao » va cac, va co, va dao
ve cac » va cac, vien cac
2 nang » v nang
vi ve » va ve, gi ve, ve ve

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 2 nang xa hoi. hieu ((ve cac) or (va cao)) xuc ((van ban) or (ban hang)) vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach 2 nang xa hoi. hieu ((ve cac) OR (va cao)) xuc ((van ban) OR (ban hang)) vi ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach 2 nang xa hoi. hieu ((ve cac) or (va cao)) xuc ((van ban) or (ban hang)) vi ve triet*.