Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dinh » thanh dinh, hinh dinh, hanh tinh
toc sach » hoc sach, doc sach, thuoc sach
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, dua tren
ve cam » ve cham, ve cac, va cam
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 ((ve cam) or (va cham)) duc va hanh dinh ((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 ((ve cam) OR (va cham)) duc va hanh dinh ((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 ((ve cam) or (va cham)) duc va hanh dinh ((cua tre) OR (cua triet))*".