It appears to be a nonsensical or very rarely used phrase with no established meaning.

संदर्भहीन वाक्यांश (गैर-स्थापित या बेहूदा वाक्यांश)

English Usage: The term "shoe string sands" is not commonly found in English literature.

Hindi Usage: "शू सट्रिंग सैंड्स" शब्द हिंदी साहित्य में आमतौर पर नहीं मिलता।