Perhaps you should try some spelling variations:
bac thanh » ban thanh, cac thanh, tai thanh
bat thanh » ban thanh, dat thanh, ba thanh
cac luat » cap luat, cac xuat, cac thuat
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
doi cua » dai cua, hoi cua
y nang » ky nang, v nang, may nang

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) OR (ly nang)) ma hoa. lieu va cac luat ((bat thanh) or (bac thanh)) doi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) ma hoa. lieu va cac luat ((bat thanh) OR (bac thanh)) doi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) ma hoa. lieu va cac luat ((bat thanh) or (bac thanh)) doi cua viet".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) ma hoa. lieu va cac luat ((bat thanh) or (bac thanh)) doi cua viet*.