Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"so tinh tong snippets" » "so trinh tong snippets", "so sinh tong snippets", "so tinh thuong snippets", "o tinh tong snippets", "so tin tong snippets", "hoi tinh 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: (((("so tinh 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: (((("so tinh tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( so tinh tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("so tinh tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.