Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van luat » dan luat, va luat, van xuat
xa khanh » xa thanh, van khanh, dat khanh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
xa hanh » xa thanh, va hanh, da hanh
cua tuc » cua duc, cua thuoc, luat tuc
y nang » ky nang, ly nang, v nang
cua tu » cua su, cua cu, cua te

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