Perhaps you should try some spelling variations:
thieu nien » thien nhien
nien giam » dien giao
ve triet » va trien, su triet
hanh tai » thanh tai, hang tai, han tai
giam luc » gia duc, gia cuc, gia loc
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach kem
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
luc va » duc va, tuc va, loc va

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 (sach ty)) nang xa hoi. thieu nien giam luc va hanh tai ((ve triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang xa hoi. thieu nien giam luc va hanh tai ((ve triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach ty)) nang xa hoi. thieu nien giam luc va hanh tai ((ve triet) or (va thiet))*.