Perhaps you should try some spelling variations:
tinh vai » tinh va, tinh hai, tinh bai
vu sach » vu bach, su sach, vu khach
va tinh » may tinh
ky danh » ky anh, ky dang
vai cua » dai cua, hai cua, lai cua
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va
cam loc » cam lo
cua te » cua tu
loc va » hoc va, luc va

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) OR (hieu qua)) cam loc va tinh 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) OR (hieu qua)) cam loc va tinh 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) OR (hieu qua)) cam loc va tinh vai cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky danh) or (ky nang)) xay hoi. ((hieu va) OR (hieu qua)) cam loc va tinh vai cua te*.