Perhaps you should try some spelling variations:
thieu nien » thien nhien
doanh lai » doanh tai, doanh luan, doanh giai
toc sach » hoc sach, doc sach, thuoc sach
nien cac » vien cac, dien cac, bien cac
lai cua » dai cua, hai cua, lai chau
nang xa » nang x, lang xa, nang ma
lo toan » le toan, ly toan, so toan
lo tan » lo van, lo ban
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: ((te sach) or (toc sach)) ky nang xa hoi. thieu nien cac ((lo toan) OR (lo tan)) doanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang xa hoi. thieu nien cac ((lo toan) OR (lo tan)) doanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky nang xa hoi. thieu nien cac ((lo toan) OR (lo tan)) doanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky nang xa hoi. thieu nien cac ((lo toan) OR (lo tan)) doanh lai cua te*.