Perhaps you should try some spelling variations:
"cha dan canh snippets" » "cha dan code snippets", "cha van canh snippets", "cha dan cach snippets", "cha dan hanh snippets", "chua dan canh snippets", "ca dan canh snippets", "cua dan canh 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 ("cha dan canh snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cha dan canh snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( cha dan canh snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cha dan canh snippets"))) or ("locating bug core snippets"))*.