Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
thanh ve » hanh ve, thanh va, thanh vien
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
va pham » van pham, va phat, va phap
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, dua tren

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 ty nang ma hoa. lieu va pham thuc va thanh ve ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoa. lieu va pham thuc va thanh ve ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ma hoa. lieu va pham thuc va thanh ve ((cua tre) or (cua triet))*.