Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
ky lang » ky dang, ky tang, tay lang
tai cua » thai cua, tai cuc, tri cua
van hoi » van hoa, van hoc, van hoe
va dung » van dung, va duong, vat dung
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
cua te » cua tu

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 nang)) van hoi. hieu ((va cam) OR (va cao)) tuc va dung tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ky lang) OR (ky nang)) van hoi. hieu ((va cam) OR (va cao)) tuc va dung tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ky lang) or (ky nang)) van hoi. hieu ((va cam) OR (va cao)) tuc va dung tai cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky lang) or (ky nang)) van hoi. hieu ((va cam) OR (va cao)) tuc va dung tai cua te*.