Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
luu tre » cuu tre, luy tre
va chat » van chat, va phat, cao chat
ve chat » van chat
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
tuc va » thuc va, truc va, tuc xa
tru » truc

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 ky dang xa hoi. hieu ((ve chat) or (va chat)) tuc va thanh van ((luu tre) OR (luu tru))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky dang xa hoi. hieu ((ve chat) OR (va chat)) tuc va thanh van ((luu tre) OR (luu tru)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky dang xa hoi. hieu ((ve chat) or (va chat)) tuc va thanh van ((luu tre) OR (luu tru))".
• Adding a wildcard symbol may retrieve word variants: toc sach ky dang xa hoi. hieu ((ve chat) or (va chat)) tuc va thanh van ((luu tre) OR (luu tru))*.