Perhaps you should try some spelling variations:
"phap hinh lam dinh f.c." » "phap sinh lam dinh f.c.", "phap tinh lam dinh f.c.", "phap dinh lam dinh f.c.", "phap minh lam dinh f.c.", "phap hinh nam dinh f.c.", "phap hinh lam tinh f.c.", "phap hinh lam linh f.c.", "phap hinh lam dinh cac.", "phap hinh lam dinh doc.", "phap hinh lam dinh hoc."
"thep hanh lam dinh duc." » "thep hinh lam dinh duc.", "them thanh lam dinh duc.", "thuc hanh lam dinh duc.", "thep hanh nam dinh duc.", "thep hanh lam tinh duc.", "thep hanh lam linh duc.", "thep thanh lap dinh duc.", "thep hanh kem dinh duc.", "thep hanh va dinh duc.", "thep hanh lam minh duc.", "thep hanh lam ninh duc."
"thep bang may trinh cau." » "thien bang may trinh cau.", "thai bang may trinh cau.", "te bang may trinh cau.", "thep bang may tinh cau.", "thep bang lap trinh cau.", "thep bang quy trinh cau.", "thep bang may trinh chat.", "thep bang may trinh chao.", "thep bang may trinh tu.", "thep mang may trinh cau.", "thep ban may trinh cau.", "thep bang tay trinh cau."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap hinh lam dinh f.c.") OR ("thep hanh lam dinh duc."))) OR ("thep bang may trinh cau."))~.
• Removing quotes may allow a broader search: (((( phap hinh lam dinh f.c. ) or ( thep hanh lam dinh duc. ))) or ( thep bang may trinh cau. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("phap hinh lam dinh f.c.") or ("thep hanh lam dinh duc."))) or ("thep bang may trinh cau."))*.