Perhaps you should try some spelling variations:
van luat » dan luat, va luat, van xuat
hieu van » hieu va, thien van, lieu va
hanh di » hanh vi, hanh de, hang di
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
cua tuc » cua duc, cua tu, cua thuoc
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, duc va
di cua » dai cua, doi cua, de cua

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) OR (su sach)) y nang xa hoi. hieu van luat ((tuc va) or (tuc xa)) hanh di cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y nang xa hoi. hieu van luat ((tuc va) OR (tuc xa)) hanh di cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) y nang xa hoi. hieu van luat ((tuc va) or (tuc xa)) hanh di cua tuc".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) y nang xa hoi. hieu van luat ((tuc va) or (tuc xa)) hanh di cua tuc*.