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
lai cua » dai cua, hai cua, lai chau
nang xa » nang x, lang xa, nang ma
cac lo » cac lop, cac bo, cac ho
cac co » cac cong
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) OR (cac co)) toan 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) OR (cac co)) toan 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) OR (cac co)) toan 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) OR (cac co)) toan doanh lai cua te*.