Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
luat tuc » luat thue
su sach » so sach, vu sach
xa hanh » xa thanh, xa khanh, va hanh
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. ((hieu van) or (lieu va)) luat tuc xa hanh vi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang x hoi. ((hieu van) OR (lieu va)) luat tuc xa hanh vi cua cu.
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. ((hieu van) or (lieu va)) luat tuc xa hanh vi cua cu*.