Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
tham tuc » tham thuc, thai tuc, nham thuc
dua tren » dung tren
dinh vi » dinh ve, dinh viet, dinh tri
te sach » toc sach
va dinh » van dinh, va kinh, va tinh
va tham » van tham, va cham, va thanh
tuc va » thuc va, truc va, tuc xa
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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 v nang x hoi. lieu va tham tuc va dinh vi ((((dua tren) or (cua tu))) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang x hoi. lieu va tham tuc va dinh vi ((((dua tren) OR (cua tu))) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach v nang x hoi. lieu va tham tuc va dinh vi ((((dua tren) or (cua tu))) or (su triet))*.