Perhaps you should try some spelling variations:
"nhung bai luan va. thoi quyet thuc tap" » "nhung bai luan va. thoi quyet thu tap", "nhung bai luan va. thoi thuyet thuc tap", "nhung bai luan va. thoi quyen thuoc tap", "nhung bai luan va. toi quyet thuc tap", "nhung bai luan va. theo quyet thuc tap", "nhung bai luan va. thi tuyet thuc tap", "nhung bai toan va. thoi quyet thuc tap", "nhung li luan va. thoi quyet thuc tap", "nhung vay luan va. thoi quyet thuc tap", "nhung bai luan va. thoi quyet tuc tap", "nhung bai luan va. thoi quyet thuc thai", "nhung bai luan va. thoi quyet thuc vat", "nhung bai luan van. thoi quyet thuc tap", "nhung bai luat va. thoi quyet thuc tap"
"nhung bo quan van. thoi quen thu lap" » "nhung bi quan van. thoi quen thu lap", "nhung don quan van. thoi quen thu lap", "trung bo quan van. thoi quen thu lap", "nhung bo luan van. thoi quen thu lap", "nhung bo quan va. thoi quen thu lap", "nhung bo quan luan. thoi quen thu lap", "nhung bo quan van. thoi quyet thu lap", "nhung bo quan van. thoi tuan thu lap", "nhung bo quan van. thoi xuan thu lap", "nhung bao quan van. thoi quen thu lap", "nhung co quan van. thoi quen thu lap", "nhung bo qua van. thoi quen thu lap", "nhung bo quan van. thoi quen thu lao", "nhung bo quan van. thoi quen tu lap", "nhung bo quan van. thoi quen thuat lap"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("nhung bo quan van. thoi quen thu lap") or ("nhung bai luan va. thoi quyet thuc tap"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("nhung bo quan van. thoi quen thu lap") OR ("nhung bai luan va. thoi quyet thuc tap")).
• Removing quotes may allow a broader search: (( nhung bo quan van. thoi quen thu lap ) or ( nhung bai luan va. thoi quyet thuc tap )).
• Adding a wildcard symbol may retrieve word variants: (("nhung bo quan van. thoi quen thu lap") or ("nhung bai luan va. thoi quyet thuc tap"))*.