Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc lam choi snippets" » "hoc dam choi snippets", "hoc lam cho snippets", "hoc lam thoi snippets", "duoc lam choi 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: (((("hoc lam choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc lam choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc lam choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc lam choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.