Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
cua viet » ca viet, hoa viet, cua dieu
co sach » bo sach, cuon sach, hoc sach
nang ma » tang ma, sang ma, nang cao
dai tuc » dai thuc, dai truc, dao tuc
va hanh » van hanh, va thanh, va danh
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, xa hoi, ma hoa
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: co sach v nang ma hoi. dieu hien dai tuc va hanh vi ((cua viet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach v nang ma hoi. dieu hien dai tuc va hanh vi ((cua viet) OR (cua vat))*.