Perhaps you should try some spelling variations:
luat tuc » luat thue
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va luat » va thuat, vay luan, cua luat
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ma hoi. hieu va luat tuc ((va tinh) OR (may tinh)) di ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu va luat tuc ((va tinh) OR (may tinh)) di ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. hieu va luat tuc ((va tinh) OR (may tinh)) di ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu va luat tuc ((va tinh) OR (may tinh)) di ((cuu tre) or (cua tre))*.