Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
cau triet » cau trieu, su triet, cua triet
tham tuc » tham thuc, thai tuc, nham thuc
dau tren » dau tien, dat tren, dau tieng
lang van » dang van, hoang van, giang van
tang van » dang van, hoang van, trong van
va thanh » gia thanh, ban thanh, va tinh
va tham » van tham, va cham, va thuat
hieu va » lieu va, hieu qua
can ky » van ky, dan ky, ban ky
tuc va » thuc va, truc va, tuc xa
tu can » tu ban, tu cac, thu canh

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu can ky ((lang van) or (tang van)) hoi. hieu va tham tuc va thanh hai ((dau tren) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky ((lang van) OR (tang van)) hoi. hieu va tham tuc va thanh hai ((dau tren) OR (cau triet)).
• Adding a wildcard symbol may retrieve word variants: tu can ky ((lang van) or (tang van)) hoi. hieu va tham tuc va thanh hai ((dau tren) or (cau triet))*.