Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don thi hue snippets" » "doan thi hue snippets", "dong thi hue snippets", "do thi hue snippets", "don thien hue snippets", "don thi thuy 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: (((("don thi 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: (((("don thi hue snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don thi hue snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don thi hue snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.