Perhaps you should try some spelling variations:
chieu chien » thien chien, hieu hien
lang van » tang van, hoang van, giang van
dang van » hoang van, hang va
cac thuc » cach thuc, cac thu, cay thuc
can thuc » dan thuc, van thuc, cay thuc
van hanh » van thanh, ban hanh, van anh
so sach » so sanh, bo sach, co sach
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y ((lang van) OR (dang van)) hoi. chieu chien ((cac thuc) or (can thuc)) van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((lang van) OR (dang van)) hoi. chieu chien ((cac thuc) OR (can thuc)) van hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y ((lang van) OR (dang van)) hoi. chieu chien ((cac thuc) or (can thuc)) van hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: so sach y ((lang van) OR (dang van)) hoi. chieu chien ((cac thuc) or (can thuc)) van hanh vi cua te*.