Perhaps you should try some spelling variations:
khang doi » khang voi, hang di, hang do
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
va triet » va thiet, va trien, ve triet
hang doi » hang di, hang loi, huong doi
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
nang xa » nang x, lang xa, nang ma
su viet » so viet
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

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 thu nang xa hoi. hieu ve cam tuc va ((khang doi) OR (hang doi)) ((va triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu nang xa hoi. hieu ve cam tuc va ((khang doi) OR (hang doi)) ((va triet) OR (su viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thu nang xa hoi. hieu ve cam tuc va ((khang doi) OR (hang doi)) ((va triet) or (su viet))*".