Perhaps you should try some spelling variations:
thieu nien » thien nhien
nien bach » vien bach, dien sach, mien bac
phan danh » phan dang, phan dinh, phan anh
toc sach » hoc sach, doc sach, thuoc sach
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
nang xa » nang x, lang xa, nang ma
bach va » bach van, bach ha, sach va
va phan » van phan, va phat, va phap
bat cau » bat dau, bat can, ba cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach thi nang xa hoi. thieu nien bach va phan danh ((bat cau) OR (dat cau)) treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach thi nang xa hoi. thieu nien bach va phan danh ((bat cau) OR (dat cau)) treo".
• Adding a wildcard symbol may retrieve word variants: toc sach thi nang xa hoi. thieu nien bach va phan danh ((bat cau) OR (dat cau)) treo*.