Perhaps you should try some spelling variations:
"thep hanh kiem dinh f.c." » "them thanh kiem dinh f.c.", "thi hanh kiem dinh f.c.", "chap hanh kiem dinh f.c.", "thep khanh kiem dinh f.c.", "thep anh kiem dinh f.c.", "thep hanh kien dinh f.c.", "thep hanh kiem dinh doc.", "thep hanh kiem dinh hoc.", "thep hanh kiem dinh luc."
"thep hinh lam dinh duc." » "thi hinh lam dinh duc.", "tap hinh lam dinh duc.", "phap hinh lam dinh duc.", "thep dinh lam dinh duc.", "thep hanh lam dinh duc.", "thep sinh lam dinh duc.", "thep hinh nam dinh duc.", "thep hinh lam tinh duc.", "thep hinh lam linh duc.", "thep hinh lam minh duc.", "thep hinh lam ninh duc."
"thuc hanh kem dinh cac." » "thuc hanh kim dinh cac.", "thuc hanh kien dinh cac.", "thuc hanh nam dinh cac.", "thuc hanh kem tinh cach.", "thuc hanh kem dinh chuc.", "thuc hanh kem dinh chau."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("thep hinh lam dinh duc.") or ((("thuc hanh kem dinh cac.") or ("thep hanh kiem dinh f.c."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("thep hinh lam dinh duc.") OR ((("thuc hanh kem dinh cac.") OR ("thep hanh kiem dinh f.c."))))*.
• Removing quotes may allow a broader search: (( thep hinh lam dinh duc. ) or ((( thuc hanh kem dinh cac. ) or ( thep hanh kiem dinh f.c. ))))*.