Perhaps you should try some spelling variations:
them hanh » them thanh, thuc hanh, thi hanh
tiem hanh » tien hanh, tim hanh, tien thanh
thien ban » thien bang, thien van, khien ban
lam dinh » nam dinh, lam tinh, lam linh
dinh duc » minh duc, ninh duc, tinh duc
ham dinh » tham dinh, pham dinh, nam dinh
dinh f.c » dinh cac, dinh doc, dinh hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((them hanh) OR (tiem hanh)) lam dinh duc. ) or ( ((thien ban) or (phien ban)) ham dinh f.c. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((them hanh) OR (tiem hanh)) lam dinh duc. ) OR ( ((thien ban) OR (phien ban)) ham dinh f.c. ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((them hanh) OR (tiem hanh)) lam dinh duc. ) or ( ((thien ban) or (phien ban)) ham dinh f.c. ))*".