Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, dua tren
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
va cham » va chat, va tham
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang ma hoa. hieu ((ve cac) or (va cham)) thuc va thanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoa. hieu ((ve cac) OR (va cham)) thuc va thanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoa. hieu ((ve cac) or (va cham)) thuc va thanh vi ((cua tre) or (cua triet))*.