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