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