Perhaps you should try some spelling variations:
phap sinh » phau sinh, phai sinh, phap tinh
tran dinh » xuan dinh
thep hanh » thep hinh, them thanh, thuc hanh
trinh doc » trinh do, trinh hoa, trinh co
lam dinh » nam dinh, lam tinh, lam linh
dinh hoc » sinh hoc, hinh hoc, tinh hoc
va trinh » van trinh, va tinh, lap trinh
hanh va » hang va, hanh vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((phap sinh) or (tran dinh)) lam dinh hoc. ) or ( thep hanh va trinh doc. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((phap sinh) OR (tran dinh)) lam dinh hoc. ) OR ( thep hanh va trinh doc. )).
• Adding a wildcard symbol may retrieve word variants: (( ((phap sinh) or (tran dinh)) lam dinh hoc. ) or ( thep hanh va trinh doc. ))*.