Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
tinh va » tich va, trinh van, trinh vat
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
ky danh » ky anh, ky dang
ky lang » ky nang, ky dang, ky tang
ve coc » ve cuoc, ve cac
tuc va » thuc va, truc va, tuc xa
va cua » va chua, via cua, ca cua
ve co » vo co, va co, de co

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((ky lang) or (ky danh)) xa hoi. hieu ((ve coc) or (ve co)) tuc va tinh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ky lang) OR (ky danh)) xa hoi. hieu ((ve coc) OR (ve co)) tuc va tinh va cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky lang) or (ky danh)) xa hoi. hieu ((ve coc) or (ve co)) tuc va tinh va cua tre*.