Perhaps you should try some spelling variations:
"thep mang lam tinh f.c." » "thep bang lam tinh f.c.", "tren mang lam tinh f.c.", "ghep tang lam tinh f.c.", "thep mang lai tinh f.c.", "thep mang mam tinh f.c.", "thep mang may tinh f.c.", "thep mang ha tinh f.c.", "thep mang ban tinh f.c.", "thep mang lam tinh hoc.", "thep mang lam tinh bac.", "thep mang lam tinh duc."
"tao bang nam trinh doc." » "tao bang lap trinh doc.", "tao bang nam dinh doc.", "tao bang nam trong doc.", "tao bang nam trinh do.", "tao bang nam trinh hoa.", "tao bang nam trinh co.", "cao bang nam trinh doc.", "tao ban nam trinh doc.", "thai bang nam trinh doc.", "tao dang nam trinh doc.", "tao bang lam trinh doc."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("thep mang lam tinh f.c.") or ("tao bang nam trinh doc."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("thep mang lam tinh f.c.") OR ("tao bang nam trinh doc.")).
• Removing quotes may allow a broader search: (( thep mang lam tinh f.c. ) or ( tao bang nam trinh doc. )).
• Adding a wildcard symbol may retrieve word variants: (("thep mang lam tinh f.c.") or ("tao bang nam trinh doc."))*.