Perhaps you should try some spelling variations:
van luat » dan luat, va luat, van xuat
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh tai, hanh van
hanh va » hang va, hanh vi
thue ha » thue hai, thue nha, thu ha
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
cua tu » cua tuc, cua su, cua cu

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