Perhaps you should try some spelling variations:
"phi khi cham snippets" » "phi khi code snippets", "phi thi cham snippets", "phi khi tham snippets", "phi chin cham snippets", "phai khi cham snippets", "phoi khi cham snippets", "phi phi cham snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("phi khi cham snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("phi khi cham snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phi khi cham snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phi khi cham snippets"))) or ("locating bug core snippets"))*.