Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"anh tuong so snippets" » "anh thuong so snippets", "manh tuong so snippets", "anh truong so snippets", "anh tuong ho snippets", "anh truong son snippets", "anh cong so 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: (((("anh tuong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh tuong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh tuong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh tuong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.