Perhaps you should try some spelling variations:
thien van » thi van
thanh via » thanh va, thanh vien, thanh vinh
doc sach » hoc sach, toc sach, nuoc sach
van phan » van phong, van thanh, luan phan
te sach » toc sach
nang xa » nang x, lang xa, nang ma
duc van » duc tan, duc manh, duc phan
via cua » gia cua, gian cua, giau cua
cua tre » cua te, cuu tre, cua triet

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 (doc sach)) ky nang xa hoi. thien van phan ((duc van) OR (duc va)) thanh via cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (doc sach)) ky nang xa hoi. thien van phan ((duc van) OR (duc va)) thanh via cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (doc sach)) ky nang xa hoi. thien van phan ((duc van) OR (duc va)) thanh via cua tre*".