Perhaps you should try some spelling variations:
phap dinh » pham dinh, phap sinh, phap tinh
phan dinh » phan tich, xuan dinh, tran dinh
thep hanh » thep hinh, them thanh, thuc hanh
lam dinh » nam dinh, lam tinh, lam linh
dinh hoc » sinh hoc, hinh hoc, tinh hoc
dinh doc » dinh duc, dinh ngoc, trinh doc
hanh va » hang va, hanh vi
va dinh » van dinh, va kinh, va tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((phap dinh) OR (phan dinh)) lam dinh hoc. ) or ( thep hanh va dinh doc. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((phap dinh) OR (phan dinh)) lam dinh hoc. ) OR ( thep hanh va dinh doc. )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((phap dinh) OR (phan dinh)) lam dinh hoc. ) or ( thep hanh va dinh doc. ))".
• Adding a wildcard symbol may retrieve word variants: (( ((phap dinh) OR (phan dinh)) lam dinh hoc. ) or ( thep hanh va dinh doc. ))*.