Perhaps you should try some spelling variations:
"thep xanh lam tinh hoc." » "heo xanh lam tinh hoc.", "thep bang lam tinh hoc.", "thep hinh lam tinh hoc.", "thep xanh may tinh hoc.", "thep xanh ha tinh hoc.", "thep xanh ban tinh hoc.", "thep dinh lam tinh hoc.", "thep xanh a tinh hoc.", "thep van lam tinh hoc.", "thep xanh lam sinh hoc.", "thep xanh lam tin hoc.", "thep xanh lam hinh hoc."
"thuc hanh lam tinh f.c." » "thuc thanh lap tinh f.c.", "thuc hanh kem tinh f.c.", "thuc hanh va tinh f.c.", "thuc hanh may tinh f.c.", "thuc hanh ha tinh f.c.", "thuc hanh ban tinh f.c.", "thuc hanh lam tinh bac.", "thuc hanh lam tinh duc.", "thuc hanh lam tinh pc.", "thu hanh lam tinh f.c."

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

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