Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
dai truc » dai thuc, doan truc, dai trung
cua viet » ca viet, hoa viet, cua dieu
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
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: so sach y nang ma hoi. dieu hien dai truc va hanh vi ((cua viet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ma hoi. dieu hien dai truc va hanh vi ((cua viet) OR (cua vat))*.