Perhaps you should try some spelling variations:
"thep hanh va tinh f.c." » "thep hinh va tinh f.c.", "them thanh va tinh f.c.", "thuc hanh va tinh f.c.", "thep hanh va tinh hoc.", "thep hanh va tinh bac.", "thep hanh va tinh duc.", "thep hang va tinh f.c.", "thep hanh vi tinh f.c.", "thep hanh may tinh f.c."
"thep hanh ban than duc." » "thep hinh ban than duc.", "them thanh ban than duc.", "thuc hanh ban than duc.", "thep thanh ban than duc.", "thep hang ban than duc.", "thep hanh san than duc.", "thep hanh ban thanh duc.", "thep hanh van thanh duc.", "thep hanh ban hang duc.", "thep hanh ban tran duc.", "thep hanh ban phan duc.", "thep hanh ban than doc."
"thep xanh lam sinh hoc." » "heo xanh lam sinh hoc.", "thep bang lam sinh hoc.", "thep hinh lam sinh hoc.", "thep hanh lam sinh hoc.", "thep dinh lam sinh hoc.", "thep xanh a sinh hoc.", "thep xanh lam tinh hoc.", "thep xanh tam sinh hoc.", "thep xanh lam linh hoc."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thep hanh va tinh f.c.") or ("thep hanh ban than duc."))) or ("thep xanh lam sinh hoc."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thep hanh va tinh f.c.") OR ("thep hanh ban than duc."))) OR ("thep xanh lam sinh hoc.")).
• Removing quotes may allow a broader search: (((( thep hanh va tinh f.c. ) or ( thep hanh ban than duc. ))) or ( thep xanh lam sinh hoc. )).
• Adding a wildcard symbol may retrieve word variants: (((("thep hanh va tinh f.c.") or ("thep hanh ban than duc."))) or ("thep xanh lam sinh hoc."))*.