Perhaps you should try some spelling variations:
hang dich » hoang dinh, van dich, ban dich
su triet » su viet, su tien, ve triet
cac thuc » cach thuc, cac thu, can thuc
thuc van » thuc vat, thuc dan, thuc va
hieu ve » hieu va, hieu van
hang di » hang doi, hang dien, hang tai
nang xa » nang x, lang xa, nang ma
hang vi » hang va, hanh vi, khang voi
bo sach » co sach, hoc sach
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach y nang xa hoi. hieu ve cac thuc van ((((hang di) OR (hang dich))) or (hang vi)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y nang xa hoi. hieu ve cac thuc van ((((hang di) OR (hang dich))) OR (hang vi)) su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach y nang xa hoi. hieu ve cac thuc van ((((hang di) OR (hang dich))) or (hang vi)) su triet*".