Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu men tong snippets" » "thu xen tong snippets", "thu ben trong snippets", "thu jen tzong snippets", "thu hien tong snippets", "thu minh tong snippets", "thu dien tong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thu men tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu men tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu men tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu men tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.