Perhaps you should try some spelling variations:
"hien hanh nam dinh doc." » "dieu hanh nam dinh doc.", "hien thanh nam dinh doc.", "hien hanh lam dinh doc.", "hien hanh ngay dinh doc.", "hien hanh nam dinh duc.", "hien hanh nam dinh ngoc.", "hien hanh nam trinh doc."
"thep xanh lam tinh hoc." » "heo xanh lam tinh hoc.", "thep bang lam tinh hoc.", "thep hinh lam tinh hoc.", "thep hanh lam tinh hoc.", "thep dinh lam tinh hoc.", "thep xanh a tinh hoc.", "thep xanh may tinh hoc.", "thep xanh ha tinh hoc.", "thep xanh ban tinh hoc.", "thep xanh lam sinh hoc.", "thep xanh lam tin hoc.", "thep xanh lam hinh hoc."
"thep hanh kiem dinh f.c." » "thep hinh kiem dinh f.c.", "them thanh kiem dinh f.c.", "thuc hanh kiem dinh f.c.", "thep khanh kiem dinh f.c.", "thep hanh kem dinh f.c.", "thep anh kiem dinh f.c.", "thep hanh kiem dinh duc.", "thep hanh kiem dinh cac.", "thep hanh kiem 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: (((("hien hanh nam dinh doc.") or ("thep xanh lam tinh hoc."))) or ("thep hanh kiem dinh f.c."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hien hanh nam dinh doc.") OR ("thep xanh lam tinh hoc."))) OR ("thep hanh kiem dinh f.c.")).
• Removing quotes may allow a broader search: (((( hien hanh nam dinh doc. ) or ( thep xanh lam tinh hoc. ))) or ( thep hanh kiem dinh f.c. )).
• Adding a wildcard symbol may retrieve word variants: (((("hien hanh nam dinh doc.") or ("thep xanh lam tinh hoc."))) or ("thep hanh kiem dinh f.c."))*.