Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
sach ly » sach y, sach lo, sach ty
hang vi » hang va, hanh vi, khang voi
hang di » hang doi, hang dien, hang dich
bac van » bach van, cac van, ban van
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
ve 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: so sach ly nang xa hoi. hieu ((ve cac) OR (va cac)) bac van ((hang di) or (hang vi)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ly nang xa hoi. hieu ((ve cac) OR (va cac)) bac van ((hang di) OR (hang vi)) su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ly nang xa hoi. hieu ((ve cac) OR (va cac)) bac van ((hang di) or (hang vi)) su triet*".