Perhaps you should try some spelling variations:
thieu nien » thien nhien
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh tai, hanh van
nien cac » vien cac, dien cac, bien cac
te sach » toc sach
hanh va » hang va, hanh vi
cac xuc » cam xuc, cac nuoc, chat xuc
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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