Perhaps you should try some spelling variations:
luat tuc » luat thue
cau treo » cau theo, cau tren, cau triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
hanh va » hanh vi
tuc va » thuc va, truc va, tuc xa

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