Perhaps you should try some spelling variations:
thieu nien » thien nhien
thanh vai » thanh hai, thanh van, thanh tai
nien cac » vien cac, dien cac, bien cac
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sac ky)) nang xa hoi. thieu nien cac nuoc va thanh vai ((su triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. thieu nien cac nuoc va thanh vai ((su triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) nang xa hoi. thieu nien cac nuoc va thanh vai ((su triet) or (va thiet))*.