Perhaps you should try some spelling variations:
nhieu viec » nhien viet
hieu viec » hieu ve, sieu viet, hieu hien
vanh dai » van dai, vanh tai, lanh dao
vu sach » vu bach, vu khach
cac luc » cau luc, coc luc, cac nuoc
su sach » so sach
ly hang » ly quang
hang xa » hoang xa, hang va, hang ca
va vanh » va van, va danh, va hanh
luc va » duc va, tuc va, loc 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) or (su sach)) ly hang xa hoi. ((hieu viec) OR (nhieu viec)) cac luc va vanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ly hang xa hoi. ((hieu viec) OR (nhieu viec)) cac luc va vanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (su sach)) ly hang xa hoi. ((hieu viec) OR (nhieu viec)) cac luc va vanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (su sach)) ly hang xa hoi. ((hieu viec) OR (nhieu viec)) cac luc va vanh dai cua te*.