Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
toc sach » hoc sach, doc sach, thuoc sach
lang van » dang van, tang van, hoang van
van hanh » van thanh, ban hanh, van anh
cham tuc » nham thuc, tham thuc, cham soc
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
y lang » o lang, _ lang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y lang van hoa. hieu ve ((cham tuc) or (pham thuc)) van hanh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y lang van hoa. hieu ve ((cham tuc) OR (pham thuc)) van hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y lang van hoa. hieu ve ((cham tuc) or (pham thuc)) van hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: toc sach y lang van hoa. hieu ve ((cham tuc) or (pham thuc)) van hanh vi ((cua tre) OR (cuu tre))*.