Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van dan thi slippers" » "van ban thi slippers", "ban dan thi slippers", "van dao thi slippers", "van dang thi slippers", "van tran thi slippers", "van dinh thi slippers", "van dan thi slippery", "van dan thi grippers"

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: (((("van dan thi slippers") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van dan thi slippers") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( van dan thi slippers ) or ( python using java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dan thi slippers") or ("python using java snippets"))) or ("locating bugs code snippets"))*.