Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quang do cau snippets" » "quang d cau snippets", "quang de cau snippets", "quang dong cau snippets", "quang dao cau snippets", "quang bo cau snippets", "quang co cau 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: (((("quang do cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quang do cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quang do cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quang do cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.