Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
danh lai » gianh lai, dinh lam, hanh lam
vu sach » vu bach, su sach, vu khach
thu dan » thuc dan, thu dang, thu ban
hieu ve » hieu van
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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 y nang o hoi. ((hieu ve) or (hieu va)) nam thu dan ((danh lai) OR (danh sai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang o hoi. ((hieu ve) OR (hieu va)) nam thu dan ((danh lai) OR (danh sai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang o hoi. ((hieu ve) or (hieu va)) nam thu dan ((danh lai) OR (danh sai)) cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang o hoi. ((hieu ve) or (hieu va)) nam thu dan ((danh lai) OR (danh sai)) cua te*.