Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
ky danh » ky anh, ky dang
vai cua » dai cua, hai cua, lai cua
xay hoi » xa hoi, tay hoi, cay phoi
va cam » va cham, va cao, va cai
loc va » hoc va, luc va
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 danh) or (ky nang)) xay hoi. hieu ((va cam) OR (va cac)) loc va thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ky danh) OR (ky nang)) xay hoi. hieu ((va cam) OR (va cac)) loc va thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ky danh) or (ky nang)) xay hoi. hieu ((va cam) OR (va cac)) loc va thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky danh) or (ky nang)) xay hoi. hieu ((va cam) OR (va cac)) loc va thanh vai cua te*.