Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong tac so snippets" » "trong cac so snippets", "tuong tac so snippets", "trong tan so snippets", "trong tai so snippets", "trong tac co snippets", "trong tac su 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: (((("trong tac 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: (((("trong tac so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong tac so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong tac so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.