Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
dao lang » dao khang, dao quang, dao trang
danh vai » danh sai, danh va, dang van
sach dao » lanh dao
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
cau duc » cao duc, cau luc, chu duc
hieu va » hieu qua
lang xa » lang ha, dang xay, lang van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach dao lang xa hoi. ((lieu va) or (hieu va)) cau duc va ((danh vai) OR (doanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach dao lang xa hoi. ((lieu va) OR (hieu va)) cau duc va ((danh vai) OR (doanh van)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach dao lang xa hoi. ((lieu va) or (hieu va)) cau duc va ((danh vai) OR (doanh van)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach dao lang xa hoi. ((lieu va) or (hieu va)) cau duc va ((danh vai) OR (doanh van)) cua tre*.