Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
danh sai » dung sai, danh bat, danh dau
danh vai » danh va, doanh van, dang van
toc sach » hoc sach, doc sach, thuoc sach
van cam » van nam, van lam, van cau
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, dua tren
xuc va » duc va, tuc va, luc va
y nang » ky nang, ly nang, v nang
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: toc sach y nang ma hoi. hieu van cam xuc va ((danh vai) OR (danh sai)) ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang ma hoi. hieu van cam xuc va ((danh vai) OR (danh sai)) ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang ma hoi. hieu van cam xuc va ((danh vai) OR (danh sai)) ((cua tre) or (cua triet))*".