Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
tham tuc » tham thuc, thai tuc, nham thuc
lang van » dang van, tang van, hoang van
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
va tham » van tham, va cham, va thanh
van hoi » van hoa, van hoc, van hoe
ty lang » tay lang, ty xang, ty hang
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty lang van hoi. lieu va tham tuc va dan vi ((((cuu tre) or (cua tre))) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty lang van hoi. lieu va tham tuc va dan vi ((((cuu tre) OR (cua tre))) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ty lang van hoi. lieu va tham tuc va dan vi ((((cuu tre) or (cua tre))) or (su triet))*.