Perhaps you should try some spelling variations:
thieu nien » thien nhien
nien cac » vien cac, dien cac, bien cac
hanh tai » thanh tai, hang tai, han tai
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 ty nang xa hoi. thieu nien cac ((xuc va) OR (tuc va)) hanh tai ((su triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. thieu nien cac ((xuc va) OR (tuc va)) hanh tai ((su triet) OR (va thiet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. thieu nien cac ((xuc va) OR (tuc va)) hanh tai ((su triet) or (va thiet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. thieu nien cac ((xuc va) OR (tuc va)) hanh tai ((su triet) or (va thiet))*.