Perhaps you should try some spelling variations:
thieu nien » thien nhien
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
hang tai » hang va, dung tai
nien cac » vien cac, dien cac, bien cac
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van tai » von tai, van tuan
lo van » le van, vo van, so van
cac lo » cac lop, cac co, cac bo

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 ky nang xa hoi. thieu nien cac lo van ((van tai) or (hang tai)) ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. thieu nien cac lo van ((van tai) OR (hang tai)) ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. thieu nien cac lo van ((van tai) or (hang tai)) ((cua triet) or (va triet))*.