Perhaps you should try some spelling variations:
nhieu ve » nhiem ve, thieu ve, nhieu viec
danh dai » danh dau, danh di, danh sai
hoc duoc » hoc nuoc, hoa duoc, hoc dung
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
va danh » va dinh, va dan, va hanh
duoc va » nuoc va, duc va, duoc ma
hieu ve » hieu va, hieu van
cua te » cua tu
nang o » nang co, nang ho, nang ro
y nang » ky nang, ly nang, v nang
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: ((tu sach) or (su sach)) y nang o hoi. ((hieu ve) or (nhieu ve)) hoc duoc va danh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y nang o hoi. ((hieu ve) OR (nhieu ve)) hoc duoc va danh dai cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y nang o hoi. ((hieu ve) or (nhieu ve)) hoc duoc va danh dai cua te*.