Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van luat » dan luat, va luat, van xuat
luat tuc » luat thue
su sach » so sach
vu sach » vu bach, vu khach
xa hanh » xa thanh, xa khanh, va hanh
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, 5 hoi

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

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