Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
duc ban » duc tan, duc van, dua ban
qua ban » cua ban, qua quan
sach 2 » sach y
2 nang » v nang
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 2 nang xa hoi. hieu ve cac ((duc ban) or (qua ban)) hang va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach 2 nang xa hoi. hieu ve cac ((duc ban) OR (qua ban)) hang va su triet*.